I'm not sure if this belongs here or in the Themes and Layouts section. As some of my recent questions have indicated, I'm working on a new store in VM 3.8.4 10335. I've made some modifications to some PHP files to customize the layout and some of the display settings. I created the template override location html/com_virtuemart/ in my default template folder, creating the additional sub-folders that any of the modified files would originally need to go in. I upload the first file, the changes take affect immediately. Later I try a second files, different location, so I make sure to copy the exact original directory to copy into the template override folder, and save the the file - but nothing happens, the change doesn't take affect. I check and double check that the override directory is correct for where the file is supposed to be; I test replacing the file in the actual, original location, and the changes take affect there, but when I restored the original file and only had the modified file in the override folder, the default remained.
It didn't make sense, but I moved on. Now I have a third file, yet another directory; copy folders, add modified file - nothing, zilch, nada. So I go back to the first file to see if maybe I left a modified copy of that one in the original location, but no, that override and only that override is working.
I even changed the virtuemart template settings from default to the currently set template, but that made no difference.
What am I doing wrong?