So I installed Acrobat Reader 9.3 via group policy. When the 9.3.1 patch came out, I copied the original 9.3 installation source folder to a new folder, and applied the patch there. Then I created a new software installation in the GPO that upgrades the previous version. Seemed to work fine.
My question is:
How long do I have to keep the original source folders around? That is, I've now got a 9.3 and a 9.3.1 folder, and the files in the 9.3 folder are essentially not needed after all the machines update. Over time I can see the number of folders growing to a large size.
When creating an upgrade installation, how does the choice between performing the upgrade over the top of the existing installation or first uninstalling the previous version affect the above question?