HELP - steam deck is deleting my saves and replacing them with clouded data

I noticed it has problem with saving from multiple devices, it doesn't sync the saves, but overrides saves from last service you played and you were offline during gameplay on previous device and went online you get saves overriden :(

made a bunch of new saves on cross code and kingdom hearts and will see what happens.
until i figure out what fuckery is afoot im done using my deck......

Cloud saves have been a problem for me too but that was due to internet. The only thing I recommend is paying attention right after you exist a game that the syncing is working and the cloud save is up to date. If you still see this happening there's ways to recover your data and make the cloud save offline for that particular game to ensure they your take doesn't overlap with the local saves.

You can access your cloud save here: https://store.steampowered.com/account/remotestorage

https://youtu.be/R9L--tKG5lE?si=HLA85VjpNELVTlbm

I have the same issue .
But its never at home .
i start every game on the deck and look at the save file .
than when i go in vacation everytime steam Wants to update all save files into void .
Doesnt matter if im online or offline .[i have wifi on my vacation and mobile data tried both and tried offline mode too]
All saves are void
4Vacations .it happened 4 times .But one time i took my Pc with me and when i booted the PC it would update the save files back to the deck .
Roaming around in my country its fine [happens only outside my country fyi.
But kinda interesting that other experience stuff like this too .

Hmm, I had a similar issue with Slay the Spire where I was playing it on my deck, continued the save on my main PC, then went back to my deck and the save wasn't synced. I just quit the game and let it cloud sync and it fixed it for me. I'll have to also test playing in offline mode for a while and seeing if switching back online sends my save data back to the last previous save sync, I'd cry lmao ;_;

This sounds frustrating as can be. Have you thoroughly troubleshooted where you can isolate the issue? Eg checking settings within those games, within Steam and the OS on the Deck, online and offline saves or play, other games, games played on both the Deck and regular computer, etc. If there are games where this doesn’t happen for you, figuring out what is different about that game can help a lot.

Are you seeing that this happens when you have an update pending mid game? Dave the Diver would be glitchy for me on the Deck when there was an update, the Steam button wouldn’t work and the game would be laggy or freeze to the point of needing to do a hard reset of the system. At this point if I turn on the Deck and I see the little yellow update icon, I get to a save point as quickly as I can and then exit and run the update.

To the extent you haven’t already, I’d try the above variable and any others you can find or think of one at a time to hopefully isolate the issue. I’d also maybe explore the system at the OS level (minimizing Big Picture) and see if the save files are stored locally somewhere and for whatever reason aren’t being recognized but are actually there.

I was gonna write couple of days ago on your Win7 group. I just wasnt able to open Steam after a long time without touching anything. I could see only the Steam Web Client Helper using the CPU (This on Windows 8.1). But I remembered I can't post due to 2AF disabled.
Turns out I had to set compatibility mode to Windows 7 on Steam exe (some Reddit thread from September helped). This was after I tried the usual delete everything except steamapps and the steam.exe for a new install but that didnt work in the first place.
Everything using cloud service was out of date the first time It worked again with steam.exe on compatibility mode.
I know you're on Windows 7. I don't have a clue If you need to force compatibility mode for Win7 on your Steam.exe so your Steam Deck works fine. Sometimes It's the weirdest sh*t that works but don't want to mess things even more.

If I understand it the problem only happens after an offline session. Offline save files are always overwritten with the ones stored in the cloud.
Same was with Spyro Trilogy, the game devs made the game to always download the save file from the cloud when available.
You can disable Cloud save for either certain games or all of them if needed.