The first part of this patch is just a way to improve performance a bit
by not calling BKE_scene_object_base_flag_sync_from_base() twice.
The second is the proper fix for the reported issue.
That said, the report can be re-opened since there is still discussion
about whether or not to bring the collections with the objects.
Reviewers: mont29
Subscribers: brecht, campbellbarton
Differential Revision: https://developer.blender.org/D4558
0c44b7e177