Adding tiles to source file breaks maps if you don't name them. Can we have a better solution?

I have this annoying issue where if I add some new tiles to my sprite sheet I would have to individually name every single one every time, or else they will be auto named using some index, and if they don't match then my tile map is all messed up.

would it be feasible to do a diff on the files first, and any matching tiles in a given grid size would take the name of the original? Or is there some better solution that I'm not seeing?

Thanks