I'm unsure if this will work with inventories other than the Create Item Vault but if the Advanced Wireless Terminal is used on a storage system in forceloaded chunks (ie with open parties and claims), the player can pull out an item and upon relogging the item will be back in the storage system as well as in the players inventory. The storage system only updates if the player goes to the chunks and properly loads them in. I figured I'd leave this here in case this is something that can be done on this end but I imagine I'll have to let the OPaC mod author know as well.

Oh I see, forceloading the inventory doesn't properly update it. Interesting.