[Other] .bak files overload

So, everytime i open A-map, change something to my rom, and close it, i create a .bak file, and I end up having way too many.
I currently have a Pokemon Emerald.bak file, a Pokemon Emerald_20140531_150755.bak, and a Pokemon Emerald_20140531_155752.bak.
I'm wondering if I can delete any of these without harming my rom, if this should even be happening in the first place, and if I'd like to upload my rom for people to patch it and play it, which one i should upload.

You can delete them, they're just backup files. The more concerning thing should be that you're using AdvanceMap 1.9.5, you should use AdvanceMap 1.9.2 as its much safer. https://ampage.no-ip.info/index.php?seite=details&program=AdvanceMap&ver=1.92

Thank you very much.
For the threads I've been reading the past hour I can tell you're very helpful to every nooby with a problem :)