I came across an issue today that when I created some new software metering rules that no data was being reported back and the reports were empty.
After a quick search the recommendation is to delete the RULECHG.RTA file from the “%installdir%\Microsoft Configuration Manager\inboxes\policypv.box” inbox, however I found that this file did not exist. Rather I had a lot of RT4, RT6 & RT18 files.
To fix what I had done was remove the rules I created, remove those files from the policypv.box inbox (copy to a temp folder). Create the rules again and check the reports.
It seems the rules were actually effective as data was being collected however no data was showing, since putting the fix in above the data now shows.