Help? Joined player not saving progress.

[Xedek]

Hello folks. Thanks in advance for any potential guidance. I am looking for any suggestions or ideas to fix things.

(Baseline info: We are playing the Xbox Game Pass version on PC. Most of the other forums seemed dead, so came here. We are playing modded Valheim, but mods are pretty much all building, with a few weapons and content mods.)

Okay, lengthy description:
My wife and I play Valheim through the Xbox Pass. We started playing right around Mistlands I think. We played vanilla, cleared most of the game, but got rather bored with it. We found a lot of the content to be kind of lacking, especially building options. We had no issues while in vanilla that I can remember.

We found some interesting mods (Odins, smoothbrain, Terraheim, etc) and decided to restart with mods. I grabbed a bunch that expanded our options. Our two computers are literally right next to each other, so I did the exact same process on both PCs in the exact same order. Same mods, same files, double and triple checked.

Everything started out fine. We played an hour or two and were running around with flint axes, etc. We came back the next day, and didn't notice any issue. Played, progressed, now we both had bronze weapons. Came back the next day - she had reset back to her previous save, at flint level. Her inventory and skills had fully reset to the previous day.

I did some troubleshooting, checked things, and we tried again hoping it was fixed. We progressed, killed Elder, max tier Finewood bows, etc. Logged off. Logged back in. She was back to flint, all progress reverted.

Regardless of what we do, what settings I change, etc, every time she logs in she reverts back to that save. My first solution was to try old/backup files. Restored her character, she was standing there with her bronze axe and armor. Logged into the server, poof, back to flint and bare skin.

I thought it might be a cloud save issue. It isn't through Steam, so I can't disable that. I downloaded her character to Local and tried to play it that way. It auto resets to Cloud save every time we open it. I couldn't find an option to disable auto-cloud.

I saw that a write error could be an issue, so I checked her character files. They are not read-only. I looked over the mods. As far as I can tell, none of them modify network, multiplayer, or saves. We can play fine, no errors, my character saves fine.

Tried having her F5 save manually, did not help. Tried making sure to have her log out to title instead of hard quitting, did not help. Made sure she logged out before I closed the server, did not help. Tons of free space on the hard drive. It is a gaming laptop, 16GB RAM, etc. Updated. No weird antivirus or (Killer) network tools. No system changes between vanilla and modded.

I simply have no idea what is causing it, other than the general observation that it looks like a cloud-save issue, with her progress rolling back when it shouldn't. Why did it only start when we added mods? No idea. No clue what is effecting it. I'm going to go over the modlist in detail, just to verify.

Any ideas, folks? We just want to get back to building our castle! Thanks again for reading all that!

[FissionChips]

I haven't played around with any of this, and certainly not through game pass, but I have an idea. If you can get her latest character save local and back it up, then go through the save manager in game and delete everything (on hers), exit the game, copy over the character to local, and load up the game. Check in the manager. My thinking is if you do this you should hopefully be able to delete the bugged game pass cloud save, and further hopefully get the local character to upload and behave as normal. There might be more advanced ways of dealing with game pass cloud saves, I know on Steam Cloud there isn't.