Let the interface reduce mistakes
The latest notes add a plus button to backpack, pouch and secure-container headers. In the shelter it suggests suitable storage; during a raid it can suggest items from adjacent portable containers; open containers can suggest items that fit by volume.
Practical use
Use suggestions as a speed aid, then verify the destination before confirming. Keep mission items and the gear you cannot replace easy to identify instead of bulk-moving during a fight.
Version note
This independently written guide summarizes current official update information. Check the live game client and official notes before making a high-risk decision, because live-service rules can change.
Independent guide based on supplied research and current official information.