When using the version "sophisticatedbackpacks-1.19.2-3.18.55.889.jar" when I put the advanced refill upgrade and select some totens, when I am playing those totens at the backpack. They disappear! I've neven seen them again after that XD

Closing given no response

The upgrade works correctly for me so my guess is that it's related specifically to the items from the mod you're using there. What's the name of that mod? I can try to retest with it and see what's going on there.