Dutch telebanking export protocol for generic pain format

Dutch banks are excepting files in a 'generic pain format', which is similar to the SEPA protocol (SEPA ISO2022) . Since banks will stop accepting the former BTL91 format as per 1st of May we need a new export format for exporting payments to Non-SEPA countries. It looks like NAV isn't ready for that in NAV2017/2018. Anyone having the same problem? Somebody already created a report/XMLport for it? Any suggestions?  Thanks!