Multiple 'F3' Quality Notifications for defects from single Service Order

Those of you working w/ the QM module no doubt know that if a failure is recorded against an inspection characteristic linked to a Production Order (Order category 10), that SAP standard functionality creates a Defect document (Quality Notification type 'F3'). Any subsequent failures recorded that are linked to that same Production Order (as well as the material & serial number) are recorded, as additional line item defectes, on that same 'F3' Quality Notification.

HOWEVER, I have found when failures are recorded against inspection characteristics for a Maintenance Order (Order Category 30), a new Defect document (Quality Notification type 'F3') is created for each failure that is recorded. Why is this?

My client wants only a single 'F3' Quality Notification to be created for any and all failures that are recorded against a single Maintenance Order. I do not see any way to accomplish this w/o a core mod. Understanding WHY SAP treats these two order categories differently will go a long way to assisting me in designing an adequate solution.

Thanks for your help.