I've found that updating a shipping container will delete all items in them, either expanding them or removing expansions will wipe the inventory. I will check later with just CreateDeco fabric but I don't think the small modpack im running would have anything conflicting.

I also noticed this problem of things being deleted when it changed on forge, then i noticed that the internal storage is one stack per block too, where normal vaults are 20 stacks per block

(Bump) I am trying to make a shipping dock and therefore requires me to use "Stickers" to lift shipping containers however items in containers get deleted when the container is replaced as a block by contraptions.

I can verify it has nothing to do with my current setup since I tested it with a vault instead of the shipping containers in which case they work as normal.

Mod file/version: 2.0.2-1.20.1-forge
NeoForge version: 1.20.1 47.1.106
Logs: n/a (Didn't show any errors)