Keycard for Assistant Manger Disappeared

[Psychwarrior_X]

My brother and I beat the assistant manager a couple hundred days ago in my game. Bro picked up the keycard and he stuck it in a storage container at one of our bases. After focusing on doing lots of base building and gear upgrades, I go to the container it was in and it's not there anymore. All other items he's placed are still there. This game was started during early access a couple months before it ended. My earlier saves I saved over since we are limited to 10 total. I'm thinking the update had to do something with it, and I will probably have to start over.