diff --git a/source/blender/blenkernel/BKE_modifier.hh b/source/blender/blenkernel/BKE_modifier.hh
index b780d755d8c..848d8dad3be 100644
--- a/source/blender/blenkernel/BKE_modifier.hh
+++ b/source/blender/blenkernel/BKE_modifier.hh
@@ -97,8 +97,6 @@ enum ModifierTypeFlag {
   /** Some modifier can't be added manually by user */
   eModifierTypeFlag_NoUserAdd = (1 << 8),
 
-  /** For modifiers that use CD_PREVIEW_MCOL for preview. */
-  eModifierTypeFlag_UsesPreview = (1 << 9),
   eModifierTypeFlag_AcceptsVertexCosOnly = (1 << 10),
 
   /** Accepts #BMesh input (without conversion). */
@@ -442,8 +440,6 @@ void BKE_modifier_set_error(const Object *ob, ModifierData *md, const char *form
 void BKE_modifier_set_warning(const Object *ob, ModifierData *md, const char *format, ...)
     ATTR_PRINTF_FORMAT(3, 4);
 
-bool BKE_modifier_is_preview(ModifierData *md);
-
 void BKE_modifiers_foreach_ID_link(Object *ob, IDWalkFunc walk, void *user_data);
 void BKE_modifiers_foreach_tex_link(Object *ob, TexWalkFunc walk, void *user_data);
 
@@ -502,12 +498,7 @@ struct CDMaskLink {
 CDMaskLink *BKE_modifier_calc_data_masks(const Scene *scene,
                                          ModifierData *md,
                                          CustomData_MeshMasks *final_datamask,
-                                         int required_mode,
-                                         ModifierData *previewmd,
-                                         const CustomData_MeshMasks *previewmask);
-ModifierData *BKE_modifier_get_last_preview(const Scene *scene,
-                                            ModifierData *md,
-                                            int required_mode);
+                                         int required_mode);
 
 struct VirtualModifierData {
   ArmatureModifierData amd;
diff --git a/source/blender/blenkernel/intern/DerivedMesh.cc b/source/blender/blenkernel/intern/DerivedMesh.cc
index 143d3c902e3..3e44a22192a 100644
--- a/source/blender/blenkernel/intern/DerivedMesh.cc
+++ b/source/blender/blenkernel/intern/DerivedMesh.cc
@@ -601,27 +601,12 @@ static void mesh_calc_modifiers(Depsgraph *depsgraph,
   ModifierData *firstmd = BKE_modifiers_get_virtual_modifierlist(ob, &virtual_modifier_data);
   ModifierData *md = firstmd;
 
-  /* Preview colors by modifiers such as dynamic paint, to show the results
-   * even if the resulting data is not used in a material. Only in object mode.
-   * TODO: this is broken, not drawn by the drawn manager. */
-  const bool do_mod_mcol = (ob->mode == OB_MODE_OBJECT);
-  ModifierData *previewmd = nullptr;
-  CustomData_MeshMasks previewmask = {0};
-  if (do_mod_mcol) {
-    /* Find the last active modifier generating a preview, or nullptr if none. */
-    /* XXX Currently, DPaint modifier just ignores this.
-     *     Needs a stupid hack...
-     *     The whole "modifier preview" thing has to be (re?)designed, anyway! */
-    previewmd = BKE_modifier_get_last_preview(scene, md, required_mode);
-  }
-
   /* Compute accumulated datamasks needed by each modifier. It helps to do
    * this fine grained so that for example vertex groups are preserved up to
    * an armature modifier, but not through a following subsurf modifier where
    * subdividing them is expensive. */
   CustomData_MeshMasks final_datamask = *dataMask;
-  CDMaskLink *datamasks = BKE_modifier_calc_data_masks(
-      scene, md, &final_datamask, required_mode, previewmd, &previewmask);
+  CDMaskLink *datamasks = BKE_modifier_calc_data_masks(scene, md, &final_datamask, required_mode);
   CDMaskLink *md_datamask = datamasks;
   /* XXX Always copying POLYINDEX, else tessellated data are no more valid! */
   CustomData_MeshMasks append_mask = CD_MASK_BAREMESH_ORIGINDEX;
@@ -901,12 +886,6 @@ static void mesh_calc_modifiers(Depsgraph *depsgraph,
         }
       }
 
-      /* in case of dynamic paint, make sure preview mask remains for following modifiers */
-      /* XXX Temp and hackish solution! */
-      if (md->type == eModifierType_DynamicPaint) {
-        append_mask.lmask |= CD_MASK_PREVIEW_MLOOPCOL;
-      }
-
       mesh_final->runtime->deformed_only = false;
     }
 
@@ -1113,8 +1092,7 @@ static void editbmesh_calc_modifiers(Depsgraph *depsgraph,
    * an armature modifier, but not through a following subsurf modifier where
    * subdividing them is expensive. */
   CustomData_MeshMasks final_datamask = *dataMask;
-  CDMaskLink *datamasks = BKE_modifier_calc_data_masks(
-      scene, md, &final_datamask, required_mode, nullptr, nullptr);
+  CDMaskLink *datamasks = BKE_modifier_calc_data_masks(scene, md, &final_datamask, required_mode);
   CDMaskLink *md_datamask = datamasks;
   CustomData_MeshMasks append_mask = CD_MASK_BAREMESH;
 
diff --git a/source/blender/blenkernel/intern/crazyspace.cc b/source/blender/blenkernel/intern/crazyspace.cc
index 91f46201ebb..e8a13ada2df 100644
--- a/source/blender/blenkernel/intern/crazyspace.cc
+++ b/source/blender/blenkernel/intern/crazyspace.cc
@@ -273,7 +273,7 @@ int BKE_crazyspace_get_first_deform_matrices_editbmesh(
         const int required_mode = eModifierMode_Realtime | eModifierMode_Editmode;
         CustomData_MeshMasks cd_mask_extra = CD_MASK_BAREMESH;
         CDMaskLink *datamasks = BKE_modifier_calc_data_masks(
-            scene, md, &cd_mask_extra, required_mode, nullptr, nullptr);
+            scene, md, &cd_mask_extra, required_mode);
         cd_mask_extra = datamasks->mask;
         BLI_linklist_free((LinkNode *)datamasks, nullptr);
 
diff --git a/source/blender/blenkernel/intern/customdata.cc b/source/blender/blenkernel/intern/customdata.cc
index 2c86687e7e7..5e8500a80d9 100644
--- a/source/blender/blenkernel/intern/customdata.cc
+++ b/source/blender/blenkernel/intern/customdata.cc
@@ -1709,15 +1709,7 @@ static const LayerTypeInfo LAYERTYPEINFO[CD_NUMTYPES] = {
      layerWrite_mdisps,
      layerFilesize_mdisps},
     /* 20: CD_PREVIEW_MCOL */
-    {sizeof(MCol[4]),
-     "MCol",
-     4,
-     N_("PreviewCol"),
-     nullptr,
-     nullptr,
-     layerInterp_mcol,
-     layerSwap_mcol,
-     layerDefault_mcol},
+    {},
     /* 21: CD_ID_MCOL */ /* DEPRECATED */
     {sizeof(MCol[4]), "", 0, nullptr, nullptr, nullptr, nullptr, nullptr, nullptr},
     /* 22: CD_TEXTURE_MCOL */
@@ -1772,24 +1764,8 @@ static const LayerTypeInfo LAYERTYPEINFO[CD_NUMTYPES] = {
      layerAdd_mloop_origspace,
      layerDoMinMax_mloop_origspace,
      layerCopyValue_mloop_origspace},
-    /* 32: CD_PREVIEW_MLOOPCOL */
-    {sizeof(MLoopCol),
-     "MLoopCol",
-     1,
-     N_("PreviewLoopCol"),
-     nullptr,
-     nullptr,
-     layerInterp_mloopcol,
-     nullptr,
-     layerDefault_mloopcol,
-     nullptr,
-     nullptr,
-     layerEqual_mloopcol,
-     layerMultiply_mloopcol,
-     layerInitMinMax_mloopcol,
-     layerAdd_mloopcol,
-     layerDoMinMax_mloopcol,
-     layerCopyValue_mloopcol},
+    /* 32: CD_PREVIEW_MLOOPCOL */ /* DEPRECATED */ /* UNUSED */
+    {},
     /* 33: CD_BM_ELEM_PYPTR */
     {sizeof(void *),
      "",
@@ -2031,11 +2007,11 @@ const CustomData_MeshMasks CD_MASK_DERIVEDMESH = {
                CD_MASK_ORCO | CD_MASK_CLOTH_ORCO | CD_MASK_PROP_ALL),
     /*emask*/
     (CD_MASK_ORIGINDEX | CD_MASK_FREESTYLE_EDGE | CD_MASK_PROP_ALL),
-    /*fmask*/ (CD_MASK_ORIGINDEX | CD_MASK_ORIGSPACE | CD_MASK_PREVIEW_MCOL | CD_MASK_TANGENT),
+    /*fmask*/ (CD_MASK_ORIGINDEX | CD_MASK_ORIGSPACE | CD_MASK_TANGENT),
     /*pmask*/
     (CD_MASK_ORIGINDEX | CD_MASK_FREESTYLE_FACE | CD_MASK_PROP_ALL),
     /*lmask*/
-    (CD_MASK_CUSTOMLOOPNORMAL | CD_MASK_PREVIEW_MLOOPCOL | CD_MASK_ORIGSPACE_MLOOP |
+    (CD_MASK_CUSTOMLOOPNORMAL | CD_MASK_ORIGSPACE_MLOOP |
      CD_MASK_PROP_ALL), /* XXX: MISSING #CD_MASK_MLOOPTANGENT ? */
 };
 const CustomData_MeshMasks CD_MASK_BMESH = {
@@ -2056,14 +2032,12 @@ const CustomData_MeshMasks CD_MASK_EVERYTHING = {
     (CD_MASK_BM_ELEM_PYPTR | CD_MASK_ORIGINDEX | CD_MASK_FREESTYLE_EDGE | CD_MASK_PROP_ALL),
     /*fmask*/
     (CD_MASK_MFACE | CD_MASK_ORIGINDEX | CD_MASK_NORMAL | CD_MASK_MTFACE | CD_MASK_MCOL |
-     CD_MASK_ORIGSPACE | CD_MASK_TANGENT | CD_MASK_TESSLOOPNORMAL | CD_MASK_PREVIEW_MCOL |
-     CD_MASK_PROP_ALL),
+     CD_MASK_ORIGSPACE | CD_MASK_TANGENT | CD_MASK_TESSLOOPNORMAL | CD_MASK_PROP_ALL),
     /*pmask*/
     (CD_MASK_BM_ELEM_PYPTR | CD_MASK_ORIGINDEX | CD_MASK_FREESTYLE_FACE | CD_MASK_PROP_ALL),
     /*lmask*/
     (CD_MASK_BM_ELEM_PYPTR | CD_MASK_MDISPS | CD_MASK_NORMAL | CD_MASK_CUSTOMLOOPNORMAL |
-     CD_MASK_MLOOPTANGENT | CD_MASK_PREVIEW_MLOOPCOL | CD_MASK_ORIGSPACE_MLOOP |
-     CD_MASK_GRID_PAINT_MASK | CD_MASK_PROP_ALL),
+     CD_MASK_MLOOPTANGENT | CD_MASK_ORIGSPACE_MLOOP | CD_MASK_GRID_PAINT_MASK | CD_MASK_PROP_ALL),
 };
 
 static const LayerTypeInfo *layerType_getInfo(const eCustomDataType type)
diff --git a/source/blender/blenkernel/intern/mesh_legacy_convert.cc b/source/blender/blenkernel/intern/mesh_legacy_convert.cc
index df08aa13f7d..fc1eba440d8 100644
--- a/source/blender/blenkernel/intern/mesh_legacy_convert.cc
+++ b/source/blender/blenkernel/intern/mesh_legacy_convert.cc
@@ -634,9 +634,6 @@ static bool check_matching_legacy_layer_counts(CustomData *fdata_legacy,
   if (!LAYER_CMP(ldata, CD_PROP_BYTE_COLOR, fdata_legacy, CD_MCOL)) {
     return false;
   }
-  if (!LAYER_CMP(ldata, CD_PREVIEW_MLOOPCOL, fdata_legacy, CD_PREVIEW_MCOL)) {
-    return false;
-  }
   if (!LAYER_CMP(ldata, CD_ORIGSPACE_MLOOP, fdata_legacy, CD_ORIGSPACE)) {
     return false;
   }
@@ -669,10 +666,6 @@ static void add_mface_layers(Mesh &mesh, CustomData *fdata_legacy, CustomData *l
       CustomData_add_layer_named(
           fdata_legacy, CD_MCOL, CD_SET_DEFAULT, total, ldata->layers[i].name);
     }
-    else if (ldata->layers[i].type == CD_PREVIEW_MLOOPCOL) {
-      CustomData_add_layer_named(
-          fdata_legacy, CD_PREVIEW_MCOL, CD_SET_DEFAULT, total, ldata->layers[i].name);
-    }
     else if (ldata->layers[i].type == CD_ORIGSPACE_MLOOP) {
       CustomData_add_layer_named(
           fdata_legacy, CD_ORIGSPACE, CD_SET_DEFAULT, total, ldata->layers[i].name);
@@ -854,7 +847,6 @@ static void mesh_loops_to_tessdata(CustomData *fdata_legacy,
    * there's not much ways to solve this. Better IMHO to live with it for now (sigh). */
   const int numUV = CustomData_number_of_layers(loop_data, CD_PROP_FLOAT2);
   const int numCol = CustomData_number_of_layers(loop_data, CD_PROP_BYTE_COLOR);
-  const bool hasPCol = CustomData_has_layer(loop_data, CD_PREVIEW_MLOOPCOL);
   const bool hasOrigSpace = CustomData_has_layer(loop_data, CD_ORIGSPACE_MLOOP);
   const bool hasLoopNormal = CustomData_has_layer(loop_data, CD_NORMAL);
   const bool hasLoopTangent = CustomData_has_layer(loop_data, CD_TANGENT);
@@ -890,18 +882,6 @@ static void mesh_loops_to_tessdata(CustomData *fdata_legacy,
     }
   }
 
-  if (hasPCol) {
-    MCol(*mcol)[4] = (MCol(*)[4])CustomData_get_layer(fdata_legacy, CD_PREVIEW_MCOL);
-    const MLoopCol *mloopcol = (const MLoopCol *)CustomData_get_layer(loop_data,
-                                                                      CD_PREVIEW_MLOOPCOL);
-
-    for (findex = 0, lidx = loopindices; findex < num_faces; lidx++, findex++, mcol++) {
-      for (j = (mface ? mface[findex].v4 : (*lidx)[3]) ? 4 : 3; j--;) {
-        MESH_MLOOPCOL_TO_MCOL(&mloopcol[(*lidx)[j]], &(*mcol)[j]);
-      }
-    }
-  }
-
   if (hasOrigSpace) {
     OrigSpaceFace *of = (OrigSpaceFace *)CustomData_get_layer(fdata_legacy, CD_ORIGSPACE);
     const OrigSpaceLoop *lof = (const OrigSpaceLoop *)CustomData_get_layer(loop_data,
diff --git a/source/blender/blenkernel/intern/modifier.cc b/source/blender/blenkernel/intern/modifier.cc
index 829178e6bc2..5563e7dff5d 100644
--- a/source/blender/blenkernel/intern/modifier.cc
+++ b/source/blender/blenkernel/intern/modifier.cc
@@ -250,24 +250,6 @@ bool BKE_modifier_supports_mapping(ModifierData *md)
           (mti->flags & eModifierTypeFlag_SupportsMapping));
 }
 
-bool BKE_modifier_is_preview(ModifierData *md)
-{
-  const ModifierTypeInfo *mti = BKE_modifier_get_info(ModifierType(md->type));
-
-  /* Constructive modifiers are highly likely to also modify data like vgroups or vertex-colors! */
-  if (!((mti->flags & eModifierTypeFlag_UsesPreview) ||
-        (mti->type == ModifierTypeType::Constructive)))
-  {
-    return false;
-  }
-
-  if (md->mode & eModifierMode_Realtime) {
-    return true;
-  }
-
-  return false;
-}
-
 ModifierData *BKE_modifiers_findby_type(const Object *ob, ModifierType type)
 {
   LISTBASE_FOREACH (ModifierData *, md, &ob->modifiers) {
@@ -606,9 +588,7 @@ bool BKE_modifier_is_nonlocal_in_liboverride(const Object *ob, const ModifierDat
 CDMaskLink *BKE_modifier_calc_data_masks(const Scene *scene,
                                          ModifierData *md,
                                          CustomData_MeshMasks *final_datamask,
-                                         int required_mode,
-                                         ModifierData *previewmd,
-                                         const CustomData_MeshMasks *previewmask)
+                                         int required_mode)
 {
   CDMaskLink *dataMasks = nullptr;
   CDMaskLink *curr, *prev;
@@ -628,10 +608,6 @@ CDMaskLink *BKE_modifier_calc_data_masks(const Scene *scene,
       if (mti->required_data_mask) {
         mti->required_data_mask(md, &curr->mask);
       }
-
-      if (previewmd == md && previewmask != nullptr) {
-        CustomData_MeshMasks_update(&curr->mask, previewmask);
-      }
     }
 
     if (!have_deform_modifier) {
@@ -670,25 +646,6 @@ CDMaskLink *BKE_modifier_calc_data_masks(const Scene *scene,
   return dataMasks;
 }
 
-ModifierData *BKE_modifier_get_last_preview(const Scene *scene,
-                                            ModifierData *md,
-                                            int required_mode)
-{
-  ModifierData *tmp_md = nullptr;
-
-  if ((required_mode & ~eModifierMode_Editmode) != eModifierMode_Realtime) {
-    return tmp_md;
-  }
-
-  /* Find the latest modifier in stack generating preview. */
-  for (; md; md = md->next) {
-    if (BKE_modifier_is_enabled(scene, md, required_mode) && BKE_modifier_is_preview(md)) {
-      tmp_md = md;
-    }
-  }
-  return tmp_md;
-}
-
 ModifierData *BKE_modifiers_get_virtual_modifierlist(const Object *ob,
                                                      VirtualModifierData *virtual_modifier_data)
 {
diff --git a/source/blender/makesdna/DNA_customdata_types.h b/source/blender/makesdna/DNA_customdata_types.h
index 24447949c10..5a80e32f650 100644
--- a/source/blender/makesdna/DNA_customdata_types.h
+++ b/source/blender/makesdna/DNA_customdata_types.h
@@ -131,8 +131,8 @@ typedef enum eCustomDataType {
   CD_PROP_BYTE_COLOR = 17,
   CD_TANGENT = 18,
   CD_MDISPS = 19,
-  CD_PREVIEW_MCOL = 20,           /* For displaying weight-paint colors. */
-                                  /*  CD_ID_MCOL          = 21, */
+  /* CD_PREVIEW_MCOL = 20, */ /* UNUSED */
+  /* CD_ID_MCOL = 21, */
   /* CD_TEXTURE_MLOOPCOL = 22, */ /* UNUSED */
   CD_CLOTH_ORCO = 23,
 /* CD_RECAST = 24, */ /* UNUSED */
@@ -148,7 +148,7 @@ typedef enum eCustomDataType {
   CD_CREASE = 30,
 #endif
   CD_ORIGSPACE_MLOOP = 31,
-  CD_PREVIEW_MLOOPCOL = 32,
+  /* CD_PREVIEW_MLOOPCOL = 32, */ /* UNUSED */
   CD_BM_ELEM_PYPTR = 33,
 
 #ifdef DNA_DEPRECATED_ALLOW
@@ -198,13 +198,11 @@ typedef enum eCustomDataType {
 #define CD_MASK_PROP_BYTE_COLOR (1 << CD_PROP_BYTE_COLOR)
 #define CD_MASK_TANGENT (1 << CD_TANGENT)
 #define CD_MASK_MDISPS (1 << CD_MDISPS)
-#define CD_MASK_PREVIEW_MCOL (1 << CD_PREVIEW_MCOL)
 #define CD_MASK_CLOTH_ORCO (1 << CD_CLOTH_ORCO)
 
 #define CD_MASK_SHAPE_KEYINDEX (1 << CD_SHAPE_KEYINDEX)
 #define CD_MASK_SHAPEKEY (1 << CD_SHAPEKEY)
 #define CD_MASK_ORIGSPACE_MLOOP (1LL << CD_ORIGSPACE_MLOOP)
-#define CD_MASK_PREVIEW_MLOOPCOL (1LL << CD_PREVIEW_MLOOPCOL)
 #define CD_MASK_BM_ELEM_PYPTR (1LL << CD_BM_ELEM_PYPTR)
 
 #define CD_MASK_GRID_PAINT_MASK (1LL << CD_GRID_PAINT_MASK)
diff --git a/source/blender/modifiers/intern/MOD_datatransfer.cc b/source/blender/modifiers/intern/MOD_datatransfer.cc
index 4ef71d4e513..b8b5e3f6c6c 100644
--- a/source/blender/modifiers/intern/MOD_datatransfer.cc
+++ b/source/blender/modifiers/intern/MOD_datatransfer.cc
@@ -506,7 +506,7 @@ ModifierTypeInfo modifierType_DataTransfer = {
     /*srna*/ &RNA_DataTransferModifier,
     /*type*/ ModifierTypeType::NonGeometrical,
     /*flags*/ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsMapping |
-        eModifierTypeFlag_SupportsEditmode | eModifierTypeFlag_UsesPreview,
+        eModifierTypeFlag_SupportsEditmode,
     /*icon*/ ICON_MOD_DATA_TRANSFER,
 
     /*copy_data*/ BKE_modifier_copydata_generic,
diff --git a/source/blender/modifiers/intern/MOD_dynamicpaint.cc b/source/blender/modifiers/intern/MOD_dynamicpaint.cc
index 95f383b29e8..f1e258289ef 100644
--- a/source/blender/modifiers/intern/MOD_dynamicpaint.cc
+++ b/source/blender/modifiers/intern/MOD_dynamicpaint.cc
@@ -198,8 +198,7 @@ ModifierTypeInfo modifierType_DynamicPaint = {
     /*srna*/ &RNA_DynamicPaintModifier,
     /*type*/ ModifierTypeType::Constructive,
     /*flags*/ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsMapping |
-        eModifierTypeFlag_UsesPointCache | eModifierTypeFlag_Single |
-        eModifierTypeFlag_UsesPreview,
+        eModifierTypeFlag_UsesPointCache | eModifierTypeFlag_Single,
     /*icon*/ ICON_MOD_DYNAMICPAINT,
 
     /*copy_data*/ copy_data,
diff --git a/source/blender/modifiers/intern/MOD_mirror.cc b/source/blender/modifiers/intern/MOD_mirror.cc
index 92a34468fe5..d598cd81e0a 100644
--- a/source/blender/modifiers/intern/MOD_mirror.cc
+++ b/source/blender/modifiers/intern/MOD_mirror.cc
@@ -245,9 +245,7 @@ ModifierTypeInfo modifierType_Mirror = {
     /*type*/ ModifierTypeType::Constructive,
     /*flags*/ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsMapping |
         eModifierTypeFlag_SupportsEditmode | eModifierTypeFlag_EnableInEditmode |
-        eModifierTypeFlag_AcceptsCVs |
-        /* this is only the case when 'MOD_MIR_VGROUP' is used */
-        eModifierTypeFlag_UsesPreview,
+        eModifierTypeFlag_AcceptsCVs,
     /*icon*/ ICON_MOD_MIRROR,
 
     /*copy_data*/ BKE_modifier_copydata_generic,
diff --git a/source/blender/modifiers/intern/MOD_weightvgedit.cc b/source/blender/modifiers/intern/MOD_weightvgedit.cc
index 6f66b480fa3..88fffbe70e7 100644
--- a/source/blender/modifiers/intern/MOD_weightvgedit.cc
+++ b/source/blender/modifiers/intern/MOD_weightvgedit.cc
@@ -93,8 +93,6 @@ static void required_data_mask(ModifierData *md, CustomData_MeshMasks *r_cddata_
   if (wmd->mask_tex_mapping == MOD_DISP_MAP_UV) {
     r_cddata_masks->fmask |= CD_MASK_MTFACE;
   }
-
-  /* No need to ask for CD_PREVIEW_MLOOPCOL... */
 }
 
 static bool depends_on_time(Scene * /*scene*/, ModifierData *md)
@@ -396,7 +394,7 @@ ModifierTypeInfo modifierType_WeightVGEdit = {
     /*srna*/ &RNA_VertexWeightEditModifier,
     /*type*/ ModifierTypeType::NonGeometrical,
     /*flags*/ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsMapping |
-        eModifierTypeFlag_SupportsEditmode | eModifierTypeFlag_UsesPreview,
+        eModifierTypeFlag_SupportsEditmode,
     /*icon*/ ICON_MOD_VERTEX_WEIGHT,
 
     /*copy_data*/ copy_data,
diff --git a/source/blender/modifiers/intern/MOD_weightvgmix.cc b/source/blender/modifiers/intern/MOD_weightvgmix.cc
index d132b75a5f0..ce53ed538cb 100644
--- a/source/blender/modifiers/intern/MOD_weightvgmix.cc
+++ b/source/blender/modifiers/intern/MOD_weightvgmix.cc
@@ -140,8 +140,6 @@ static void required_data_mask(ModifierData *md, CustomData_MeshMasks *r_cddata_
   if (wmd->mask_tex_mapping == MOD_DISP_MAP_UV) {
     r_cddata_masks->fmask |= CD_MASK_MTFACE;
   }
-
-  /* No need to ask for CD_PREVIEW_MLOOPCOL... */
 }
 
 static bool depends_on_time(Scene * /*scene*/, ModifierData *md)
@@ -497,7 +495,7 @@ ModifierTypeInfo modifierType_WeightVGMix = {
     /*srna*/ &RNA_VertexWeightMixModifier,
     /*type*/ ModifierTypeType::NonGeometrical,
     /*flags*/ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsMapping |
-        eModifierTypeFlag_SupportsEditmode | eModifierTypeFlag_UsesPreview,
+        eModifierTypeFlag_SupportsEditmode,
     /*icon*/ ICON_MOD_VERTEX_WEIGHT,
 
     /*copy_data*/ BKE_modifier_copydata_generic,
diff --git a/source/blender/modifiers/intern/MOD_weightvgproximity.cc b/source/blender/modifiers/intern/MOD_weightvgproximity.cc
index 77ae197e32a..41b14f80ef9 100644
--- a/source/blender/modifiers/intern/MOD_weightvgproximity.cc
+++ b/source/blender/modifiers/intern/MOD_weightvgproximity.cc
@@ -351,8 +351,6 @@ static void required_data_mask(ModifierData *md, CustomData_MeshMasks *r_cddata_
   if (wmd->mask_tex_mapping == MOD_DISP_MAP_UV) {
     r_cddata_masks->fmask |= CD_MASK_MTFACE;
   }
-
-  /* No need to ask for CD_PREVIEW_MLOOPCOL... */
 }
 
 static bool depends_on_time(Scene * /*scene*/, ModifierData *md)
@@ -741,7 +739,7 @@ ModifierTypeInfo modifierType_WeightVGProximity = {
     /*srna*/ &RNA_VertexWeightProximityModifier,
     /*type*/ ModifierTypeType::NonGeometrical,
     /*flags*/ eModifierTypeFlag_AcceptsMesh | eModifierTypeFlag_SupportsMapping |
-        eModifierTypeFlag_SupportsEditmode | eModifierTypeFlag_UsesPreview,
+        eModifierTypeFlag_SupportsEditmode,
     /*icon*/ ICON_MOD_VERTEX_WEIGHT,
 
     /*copy_data*/ copy_data,