We enter finished production through WO-I (Enter finished production).  A total of five different work order receipts were entered, totaling 86 pieces.  The quantity completed in the work order only shows 84 pieces.  I printed JC-Q (Print Work Order Receipts) and it matches 86 pcs.  I viewed inventory transactions in IN-A (Inventory Inquiry) and IN-E (Print Inventory transactions), it matches 86 pcs., as well.  Inventory and Lot Control are correct based on the 86 pcs. that were entered.  Why would the work order only show 84 pcs. finished?  
 
I also ran SM-J-C in report only mode, and it didn't show that it would fix the problem.