1 files changed, 6 insertions, 0 deletions
diff --git a/intern/cycles/blender/object.cpp b/intern/cycles/blender/object.cpp
index 9919b9d1836..3800ea0ecd2 100644
--- a/intern/cycles/blender/object.cpp
+++ b/intern/cycles/blender/object.cpp
@@ -161,6 +161,11 @@ Object *BlenderSync::sync_object(BL::Depsgraph &b_depsgraph,
   if (is_instance) {
     persistent_id_array = b_instance.persistent_id();
     persistent_id = persistent_id_array.data;
+    if (!b_ob_info.is_real_object_data()) {
+      /* Remember which object data the geometry is coming from, so that we can sync it when the
+       * object has changed. */
+      instance_geometries_by_object[b_ob_info.real_object.ptr.data].insert(b_ob_info.object_data);
+    }
   }
 
   /* light is handled separately */
@@ -560,6 +565,7 @@ void BlenderSync::sync_objects(BL::Depsgraph &b_depsgraph,
   else {
     geometry_motion_synced.clear();
   }
+  instance_geometries_by_object.clear();
 
   /* initialize culling */
   BlenderObjectCulling culling(scene, b_scene);