IFS App 9

I have a customer that manufacture parts reported by receiving reels, x pcs per reel.

Sometimes the quality in the reel is not 100% approved and the customer want to rewind two reels into one.

Test Case : The part has order based lot tracking, many lots allowed, not multi-tracked

1 reel in stock, batch A, 1000 pcs but 400 are non-conforming

1 reel in stock, batch B, 1100 pcs but 600 are non-conforming

• Create a repair shop order, Lot Size 2100
• Issue material, complete qty from both lot A & B
• Now I want to scrap 400 from lot A and 600 from lot B but I cannot define lot no for scraped parts, what is the problem? 
  When select Component Scrap, no lines are populated in the lower part of the form, why not?