Minecraft version: 1.20.1
Forge Version: 47.2.0
Mod Version: 0.14.2
Sophisticated Core Version: 0.5.107.496
Sophisticated Storage Version: 0.8.58.644
Relevant Modpack: All The Mods 9 - 0.2.24

Description: A Limited Barrel II with a Compression upgrade, loses all items upon opening after being packed up and moved.
Steps to Replicate:
Create/Give a Limited Barrel II.
Create/Give a Compression Upgrade, apply to Limited Barrel II.
Right click on Limited Barrel II with two blocks of iron, blocks of coal, or other item that can be crafted/uncrafted into a block.
Create/Give Packing Tape and Paper, sneak and right click on Limited Barrel II to package.
Break packaged Limited Barrel II and place down elsewhere.
Right Click to open.

Expected Behavior:
The packaged item unwraps, and contains the same number of items it had when wrapped.
Actual Behavior:
The packaged item unwraps and does not contain any of the items it had when wrapped. Items display visually on the front, but do not exist inside the block.

I'll take a look, but odds are this is an issue with how the limited barrel stores the data on save.

Thanks! I'll cross report to Sophisticated Storage as well if it's a data problem on their end. I haven't poked at the code or anything yet, I just figured I'd start here and work my way backwards along the chain of usage. Yayy mod interaction weirdness