It's possible to prepare an export (template for Excel document), that will be identical in terms of data to the existing Kundreskontra - detailed printout.

It can be generated from:

Finance - Financial Printouts - Debtor's Printouts. 

When your preferred search parameters are chosen in regards to date etc and the search is loaded, then choose the format Kundreskontra - detailed (marked with the small Export symbol.) and the export will be generated.