Figured things out thanks to SuperSonic16--check his comment below--gonna leave this thread up, though, in case others have a similar issue.
I have a feeling this is probably an easy fix/thing to do, but since my research has come up somewhat fruitless, I figure I'll ask here.
I just bought Forces thanks to the Winter Steam Sale--can't believe I double dipped on Forces of all things, but I digress; mod support made it worth it over just having the Switch port--and I would love to dive in to these awesome stage mods I've been seeing, like Grand Metropolis. Thing is, it replaces Stage 23 if I'm not mistaken, and here I am, starting from Stage 1.
I've been looking around for 100% save files, thinking making the file into a mod (like the old Generations method of using different saves) would work, but apparently not. I tried simply replacing the savedata.xml file with some 100% one I found, and that just made me have to start from New Game again.
I read that you need to complete Stage 1 twice for some reason in order for your own save to register before you can replace it, but even then, I just keep wiping my save whenever I replace it instead of having an option to Continue.
Anyone know how to use different save files? Personally, I just don't feel like playing Forces through to the late game stages...but if need be, I will.
If you Use crack version this path any drive and folder you install game in it\Sonic Forces\savedata\68157440 or steam version you must turn off steam claud system Than this path any drive and folder install game in it\savedata\your user ID\savedata.xml
There is a major bug in the public version of FML that seems to cause weird behaviours depending of the settings, if you want you can test the newest untested build of FML which I have been working on fixing the save file bug.