I have been using Logbook Pro Professional Edition for many years. I use the LBX method of the PC-to-PC Sync Wizard to keep a primary copy of my logbook on my home computer and a clone on my work computer. This allows me to make flight entries on either computer and keep them in sync. Recently, I have been having an issue syncing from my clone copy, back to my primary copy. Entries created in my primary copy and synced to the clone will transfer as expected. Entries created in the clone will no longer sync back to the primary copy. This behavior has been an issue for a few weeks now after working fine for years. Both computers have been rebooted. I use a Google drive folder for transferring the LBX files between computers. The LBX files and extracted LBK files appear to have the correct file date & time stamps. Nothing in my process has changed. Any idea what would cause this problem?