Why can't I edit my line items on an Order?
Check to see if your order is in the Invoice status (pink background). Invoices are locked down to verify account records aren’t accidentally changed with a mis-click. To edit your items either change the order back to a Work Order, update the information, and then convert back to Invoice OR use the completion wizard as a way to update the line items within. Be very careful if doing this action on invoices already posted to Quickbooks, as you will need to update them on Quickbooks' end as well.