Describe the bug:
When i'm using backpack on create contraption the deployer can't pick up item from it magnet doesn't work proprely

i tryed to use sophisticated barrel this time the barrel work but when the structure turn into contraption he remove the item inside exept if i already put item in the backpack memory

Info on what other mods you're using that may cause a conflict here if applicable:
using Prominence 2 RPG Hasturian Era mod pack

To Reproduce
Steps to reproduce the behavior:

1. Make a create contraption
2. put a barrel or a backpack depend on the bug you want to reproduce
3. start the contraption, stop it
4. see no more item or the fact that the contraption can't pick up item from it

Expected behavior

A clear and concise description of what you expected to happen:
Backpack : make the contraption work with the backpack (also make the upgrade of the backpack work)
Barrel : dont destroy the item inside even if i didn't put it in the memory
Contraption used :

Screenshots
If applicable, add screenshots to help explain your problem.

Versions
1.20.1