I have performed the following test: Installed btsync on my desktop and NAS On my PC created folder TestFolder with files a.py and b.py Added this folder to btsync through http://localhost:8888 Copied read-only secret Entered http://nas-ip:8888 in order to add my PC folder to sync (with the read-only secret) Content was synced between my NAS and PC Added, removed and modified files on my PC - changes were applied to NAS (as expected) Removed file (e.g. a.py) from NAS - nothing happened to my PC folder (as expected) I expected the file (a.py) to be sent back to NAS once next sync event was triggered (i.e. within 10 minutes) but nothing happen (not expected) The questions is: how do I resync files that were mistakenly deleted from NAS? In a way it's a nice feature not to download such files (well, since they were removed, then most likely I don't want them to sync), but I'd appreciate a simple way to force a full sync. Did anyone else experience similar issue? Is there any workaround?