HELP... ! deleted Cards?

[Rumo]

Deleting Filtered Deck deleted cards

The good news is, I don’t think you’re cards are actually deleted. The browser should only look like that if cards were deleted after it was opened or last refreshed. However, database issues may also manifest like this. This has been improved recently, so you may get more information after installing the latest release. Deleting the filtered deck could be entirely unrelated and the usual debugging steps may help: When problems occur - Frequently Asked Questions (especially ‘Check Database’).