I have iOS LR v 7.5.2. It has worked fine syncing with LR (cloud) version 6, up until 3 days ago. Cloud version seems to be locked in a sync of three pictures for several days. I edited a different picture on the iOS version and cannot get it to sync. It is not one of the three that seems to be locked in a sync pattern. How do I get this to stop and get the one photo I did edit to in fact sync?