How can we clear the inventory and have it rebuilt with the next scheduled scan?

We are having issues where inventory reports are not correct.

If I look at Software and say look at Winzip.  On the initial screen it will say we have 28 managed installations.  If I click on the 28 it takes me to the screen where it lists all of the computers that have the software.  This list will only have 5 machines, but the Managed /Network installations still says 28.

Essentially, I would rather have the machines create new inventory metrics every time they scan, instead of appending existing scans.  It seems like if we remove a machines from management, it isn't purging the counts correctly.

Attached is an example showing 5 installations reported, but only 3 computers being listed.

This isn't the only software that shows this issue.