We play two players game - split screen - on Xbox X. Every player has its own Xbox account (not guest), after starting Minecraft, the second player with Xbox account joins the game.
Normally all progress (inventory and experience points) is saved and after joining the game I can continue where I left (I always end the game by "Exit and save" button).
After last update to v1.21.130, only the first player was saved, the second player just disappeared. After joining as the second player with his account, player started as a complete new player without anything in the inventory and with no experience points (not spawned in our house but somewhere in the wild). This was the reason I have created the second Xbox account - in order to prevent loosing progress with just a guest account, unfortunately it didn't help with this update.
Expected result is not to loose the progress after the game update - on Xbox I don't have the option not to update the game.
We're tracking this issue at MCPE-233088, so this report is being resolved and linked as a duplicate.
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