Thanks—this was very helpful!
I’m sure it comes up with some frequency; perhaps they’ll include this in future documentation.
As to cleaning the sync—since I need to reinstall DT3/DTTG on 3 of my four devices (laptop, iMac, and iPad), and I’m also getting a some “manifest missing” errors, I thought it might be a good idea to try it, per this advice:
In any case, I greatly appreciate your helpful response!