All is well. All is very well indeed!
My first pilot I tried to test had no such files to delete. So I tested it on 3.7.0 and it worked just fine. So I found a pilot that did have such files to delete. It didn't work with them, but it works without them, and it works on an earlier build as well.
I now also have a new "master pilot" file. The new pilot code is wonderful. Tested it out beating a couple of missions (Wings of Dawn and Operation Templar) two different campaigns for two different mods, and it works perfectly. It's wonderful!
I've only been around about 18 months, and I have too many pilots to fit on the pilot screen so some have to be stored away. What must it be like for those of you who have been here for many years and I presume have had to create a new pilot for each and every new campaign?
So I'm very happy with my new master pilot. I hope to one day have all my campaigns on that file. My sincerest gratitude to all responsible for this.
I will run through the process of deletion and testing all my pilots later. If there are any problems I'll come back, if not, then that means they're all working. Thanks a lot niffiwan!