Hi Steven,
I try to keep the client and host versions in sync, but its not easy because the client will prompt for an update regardless of the host versions on the backed.
This can be disabled in Viewer Options -> Update. Besides, the update is never mandatory, the program just notifies you that a new version is available but it's always up to you whether to update or not.
In this case the client got updated first, then the RU server. The connection that got deleted was an older version (6.10.5) of the host software.
The Host version shouldn't be affecting the sync mechanism in any way. An address book record is just a record, its contents doesn't really affect how the sync mechanism works. We tried the same update order but didn't notice any issues.
See the attached screenshots images of the windiff of the files. The left side is the 2.7.6 version of the address book. The right side is the same address book after the 2.7.8 update. It appears the 2.7.8 update made some changes to the address book that may have caused the account I was using to lose access to the connection entry.
Yes, this is interesting. Could you tell me how exactly you set permissions for that book? Did you enable full access to the entire address book at the top level or was it more granular (folder- or even connection-based)? The more details the better - this will help us better reproduce the problem if it's somehow related to permissions.
Looking forward to your reply.