So, I have module A. It reprocess to 4 of mineral X if I reprocess it as a single item, but to 7 of mineral X if I reprocess it as a pair.
The odd bit is, if I reprocess 2 module A's, stacked as two single items, I get 8 of X. It only goes to 7 when the items are stacked before re-processing.
I guess this is working as intended?