Have several older categories from 2+ years back. I’d like to delete them. What will I break if I do that?
If you have any transactions categorized using them you’ll get data validation errors (red triangles in upper right of cell) in the Transactions sheet and the same thing if they’re on your AutoCat sheet.
You could either hide them (Hide from Reports on Categories sheet) or maybe use the Rename/Merge category tool in the Tiller Community Solutions add-on to handle them.