I was trying to add in a new rule that overwrites descriptions and forgot to edit it before running AutoCat. It then subsequently overwwrote a whole bunch of data that I didn’t mean to. Is there a way to undo this?
You can hopefully use version history to get that data back! But understand that Tiller will not reload anything they’ve already loaded into your sheet. So if you filled your sheets after making the mistake, copy out those most recent transactions so they’re not lost!
For Google Sheets: Find what's changed in a file - Computer - Google Docs Editors Help
For Excel: View previous versions of Office files - Microsoft Support