The current functionality only looks at factory warranty end date. We often sell machines with extended warranty (EPP) which means we should be able to only show serial numbers using the max date.
Feedback from Peter LeMare "While this is working as designed, we agree that it's not designed quite right. We think we should make it configurable so that you can either see all warranties, or just the warranties with the latest date"
Ticket details 00021076
Paul Meyer
