Paste Insert Quote Mfg Subcontract Line

One of my engineers was asking why paste-insert doesn’t work for subcontract lines in the quote manufacturing details. When I tested it, it inserted the line, but as a normal operation instead of subcontract despite copying the line exactly.
Any idea why we cannot paste-insert a subcontract line type?

Replication Steps:

  1. Create a subcontract line on the manufacturing details and populate the information
  2. Go to list view, highlight the row, right-click and copy selection
  3. Paste into Excel and modify the operation sequence number to be 20 (or anything besides the original)
  4. Copy the info and paste-insert into the list view