Hello. I recently installed the stock by attribute following the directions on the readme.
I've noticed that I've added a bunch of php files to the main directory as well as overwrite several core files.

I've read on other posts to always use the overide system but does this not apply to stock by attributes?

My concerns stem primarily from the likelihood of upgrading to a new version of zen cart in the future. Would I have to back up files i uploaded to install stock by attribute and put them back in after I make the upgrade?

hope anybody can help!!