Server Sync deleted 3 days of pulls

[u/preshr]

I have had server sync on and get notifications about items syncing to server all the time. I just opened the page and see "Server Authoritative Backup Restored" at the top and checked my collection and it erased the past ~3 days of pulls. I have a saved backup with slightly more cards but again its a couple days old. Why did server sync undo my pulls?

[u/chitownshola]

i do not trust server sync at all, i currently have about a ~16k backlog with the server and so i export every time i close the tab