Make Redelivery bunker breakdown in a TC out editable also when there is quantity 'Paid by operator'

Sometimes we have bunker price difference for some quantities and we need to do some compensations on redelivery.
Our users on Imos 6 were doing this by putting the amount and cost in redelivery bunker breakdown (adding an additional row) but Imos Live is not allowing them to do it anymore if there is quantity that is 'Paid by operator'.
They can add a row on Redelivery section but not put any numbers there, seems blocked.