Wadaco - Report Picking Part Preparation Article in multiple locations

Hi,
I’ve done a reservation of an article in multiple locations in IFS Apps10. I’m trying to prepare that article using Wadaco, however the current configuration prevents me to access the second location when completing the first preparation, the article is tagged as prepared and is no more available in the list of items. I’ve tried using loops but I have no idea how it works thus I did not manage to have something that works in the end.