After opting out of the beta, I think I was fine for a day or so. It appears there are newer updates released today/yesterday on iOS and Windows.
I'm now concerned that I may be losing data or the apps not using the correct data from OneDrive. Is there a way to merge without data loss?
After reconnecting OneDrive sync on iOS, I just saw my items number go from 548 to 544 (4 items gone).
This is after "Your sync with OneDrive has been disconnected. Please connect again"
iOS version: 6.4.0 (438)
Windows 10 version: 6.4.0 (632)