Hello! Thanks to @battk I managed to solve the commit problem and within a few days I'll post my solution. Now I have another problem related to Special Orders. I created a Purchase Order using the Special Order feature. Then I processed the PO using Quality Management bundle and my need is to copy some data (actually Quality data) that were set on the Purchase Order lines back to the related Sales Order lines. Unfortunately I cannot find any field that says what Special Order line generated the Purchase Order line. Obviously I can retrieve the Sales Order by using createdfrom but not the lines. Have anybody encountered similar problems? Thanks.

use a search and use the applying transaction or applied to transaction join

Thanks battk!