Altiris Software inventory shows some softwares which are updated/deleted.

HI,

I have a All-in-One Altiris Notification Server 7.1 (Virtual Machine) for PC inventory & software deployment with MSSQL database 2008 R2.

This PC only has Adobe Flash Player 18 ActiveX in "Add/Remove Program" now, why it shows version 11 & 16 also? Is that the inventory check also scan some old software in the PC also? THX