I have found a dupe bug in openblocks concerning the luggage. IF you have 3 luggages, you fill one with any block you want, a second with some other blocks, and place down all three. If you then destoy the two with items in them and have them picked up by the third, the two would stack in the luggage, which they would normally not do. If you then place down these two, they will have the same inventory, duping the set of items from one luggage into the other.
This is open blocks version 1.2.2

NBT Comparison is failing here.
isItemEqual vs isItemStackEqual.

Will be fixed shortly. I will close this issue when it's fixed.

This is fixed ready for next release

#223