Ha, good to know it's random
, I just assumed it was the top item because that that's what dropped. Not important to what I was trying to communicate.
And sorry, yeah, it is confusing. I'll try to explain my thoughts more clearly using a simpler case:
One is holding a single medium storage unity, full utility slots, and 5 non-storage items in Inventory. If one were to un-attach the storage unit, inventory would be full, so the unit is dropped, and one more item would also be dropped (at random) to bring inventory down to 4.
However, if one attempts to swap out the storage unit for an item from inventory, even though inventory is full and the storage unit should not fit, it is added bringing inventory over capacity, and then one item is dropped at random to bring inventory down to 4. This is inconsistent with how item management rules are applied any other time an action would try to place an item in a full inventory.