Invoices not requiring additional approval if NL code is amended

We are currently using Sicon WAP and have invoice approval turned on, however whenever an invoice is Corrected in Sage it automatically puts a U against the invoice in the PL account and re-sends the invoice for approval in Sicon, even though it has been approved at requisition level in line with our DoA. Is there any way that NL coding changes didn't have to go through this process, i.e. there was an option to turn the functionality on or off so that it wouldn't impact other users who do want them to go for re-approval?