- add a document (say xyz.pdf) to the global inbox on machine 2
xyz.pdf syncs to the Global Inbox on machine 1
- later (i.e. after a sync) I move this document to database C on machine 1
xyz.pdf is removed from the Global Inbox on machine 2 since no longer exists in the Global Inbox on machine 1.
The document only exists in database C on machine 1 since that database isn’t synced.
Sync is a mirroring sync so it always tries to keep the database in the same state on all syncing machines.