Yeah, the CP must be before COO but not so long like that. The lead time for Manufacture is 2 days only!
I had tried deleting OE# line ~ COO line 7,8,9 then Merge again. With report, CP line 6,7,8 was deleted too, then Due date is OK.
I mean with COO7,8,9 with due date later than COO 1->6 but...