I have a question regarding to condition types in differential invoices.
When a differential invoice is created, all conditions types that are not calculated because are not in the pricing procedure for the differential invoice but were calculated in the provisional invoice, are completely reversed. If you go to the "diff. condition" tab, you will see all the amount calculated in the provisional invoice for every condition type has been reversed. It actually means no posting will be done for the condition type after the invoicing process will be ended. If the condition type is present in the pricing procedure of the differential inovice, it will be compesated against the amount calculated for the same condition type in the provisional invoice and a net value will be posted (and show in the "diff condition" tab).
For instance, if a surcharge has been calculated in a condition type for the provisional invoice but it is not calculated in the differential invoice (because the condition type apllies only for the provisional invoice), all the amount calculated in the proviisonal invoice is reversed when creating the differential invoice (you can see it the the "diff condition" tab). For this case, This is not a F&A condition type.
So the real question is, how I could avoid this to happen?
any help will be highly appreciate.