diff --git a/source/blender/blenkernel/BKE_lib_remap.hh b/source/blender/blenkernel/BKE_lib_remap.hh
index 6717d75021e..4586cefe8d2 100644
--- a/source/blender/blenkernel/BKE_lib_remap.hh
+++ b/source/blender/blenkernel/BKE_lib_remap.hh
@@ -86,6 +86,12 @@ enum {
    * etc.). */
   ID_REMAP_DO_LIBRARY_POINTERS = 1 << 8,
 
+  /** Allow remapping of an ID opinter of a certain to another one of a different type.
+   *
+   * WARNING: Use with caution. Should only be needed in a very small amount of cases, e.g. when
+   * converting an ID type to another. */
+  ID_REMAP_ALLOW_IDTYPE_MISMATCH = 1 << 9,
+
   /**
    * Don't touch the special user counts (use when the 'old' remapped ID remains in use):
    * - Do not transfer 'fake user' status from old to new ID.
@@ -267,6 +273,13 @@ class IDRemapper {
    */
   blender::Set<ID *> never_null_users_;
 
+ public:
+  /**
+   * In almost all cases, the original pointer and its new replacement should be of the same type.
+   * however, there are some rare exceptions, e.g. when converting from one ID type to another.
+   */
+  bool allow_idtype_mismatch = false;
+
  public:
   void clear(void)
   {
diff --git a/source/blender/blenkernel/intern/lib_id_remapper.cc b/source/blender/blenkernel/intern/lib_id_remapper.cc
index 7027c4d175d..b79a0783656 100644
--- a/source/blender/blenkernel/intern/lib_id_remapper.cc
+++ b/source/blender/blenkernel/intern/lib_id_remapper.cc
@@ -15,7 +15,8 @@ namespace blender::bke::id {
 void IDRemapper::add(ID *old_id, ID *new_id)
 {
   BLI_assert(old_id != nullptr);
-  BLI_assert(new_id == nullptr || (GS(old_id->name) == GS(new_id->name)));
+  BLI_assert(new_id == nullptr || this->allow_idtype_mismatch ||
+             (GS(old_id->name) == GS(new_id->name)));
   BLI_assert(BKE_idtype_idcode_to_idfilter(GS(old_id->name)) != 0);
 
   mappings_.add(old_id, new_id);
@@ -25,7 +26,8 @@ void IDRemapper::add(ID *old_id, ID *new_id)
 void IDRemapper::add_overwrite(ID *old_id, ID *new_id)
 {
   BLI_assert(old_id != nullptr);
-  BLI_assert(new_id == nullptr || (GS(old_id->name) == GS(new_id->name)));
+  BLI_assert(new_id == nullptr || this->allow_idtype_mismatch ||
+             (GS(old_id->name) == GS(new_id->name)));
   BLI_assert(BKE_idtype_idcode_to_idfilter(GS(old_id->name)) != 0);
 
   mappings_.add_overwrite(old_id, new_id);
diff --git a/source/blender/blenkernel/intern/lib_remap.cc b/source/blender/blenkernel/intern/lib_remap.cc
index 2acc232421d..70f3dfe4b2a 100644
--- a/source/blender/blenkernel/intern/lib_remap.cc
+++ b/source/blender/blenkernel/intern/lib_remap.cc
@@ -569,7 +569,8 @@ static void libblock_remap_foreach_idpair_cb(ID *old_id, ID *new_id, void *user_
   const int remap_flags = data->remap_flags;
 
   BLI_assert(old_id != nullptr);
-  BLI_assert((new_id == nullptr) || GS(old_id->name) == GS(new_id->name));
+  BLI_assert((new_id == nullptr) || remap_flags & ID_REMAP_ALLOW_IDTYPE_MISMATCH ||
+             GS(old_id->name) == GS(new_id->name));
 
   if (free_notifier_reference_cb) {
     free_notifier_reference_cb(old_id);