1 files changed, 15 insertions, 0 deletions
diff --git a/source/blender/blenloader/intern/versioning_290.c b/source/blender/blenloader/intern/versioning_290.c
index 0dd1ecd0008..00c73ebe9a7 100644
--- a/source/blender/blenloader/intern/versioning_290.c
+++ b/source/blender/blenloader/intern/versioning_290.c
@@ -268,6 +268,7 @@ void blo_do_versions_290(FileData *fd, Library *UNUSED(lib), Main *bmain)
   {
     /* Keep this block, even when empty. */
 
+    /* Transition to saving expansion for all of a modifier's subpanels. */
     if (!DNA_struct_elem_find(fd->filesdna, "ModifierData", "short", "ui_expand_flag")) {
       for (Object *object = bmain->objects.first; object != NULL; object = object->id.next) {
         LISTBASE_FOREACH (ModifierData *, md, &object->modifiers) {
@@ -302,5 +303,19 @@ void blo_do_versions_290(FileData *fd, Library *UNUSED(lib), Main *bmain)
         }
       }
     }
+
+    /* Transition to saving expansion for all of grease pencil modifier's subpanels. */
+    if (!DNA_struct_elem_find(fd->filesdna, "GpencilModifierData", "short", "ui_expand_flag")) {
+      for (Object *object = bmain->objects.first; object != NULL; object = object->id.next) {
+        LISTBASE_FOREACH (GpencilModifierData *, md, &object->greasepencil_modifiers) {
+          if (md->mode & eGpencilModifierMode_Expanded_DEPRECATED) {
+            md->ui_expand_flag = 1;
+          }
+          else {
+            md->ui_expand_flag = 0;
+          }
+        }
+      }
+    }
   }
 }