I am currently using InstallAware 6.6 to build Group Policy deployments, and it's working very well. I am however having a lot of trouble building patches to perform upgrades on the main release.
To test it, I have a complete virtual domain set up under Microsoft Virtual Server. There is the domain controller and one pc configured (it all works just fine).
The test install is a just a text file. That is added to the packages list in GP and installs nicely on the client machine after a couple of virtual reboots

I then add the exe (not the GPO MSI that needs generating - the "Single" exe) to the patch list, modify my text file, create a patch against it, then re-generate the GPO-valid MSI.
After adding the patch to the Packages list in GP, I set it to be an "Upgrade" (install over existing install). After some more client rebooting, it also installs as expected, except the text file hasn't changed.
I've run through this routine a couple of times now. I even enabled logging on the client but the logs didn't lead to anything unexpected. The event log states that upgrade was successful. It lies! Well, probably.
What am I doing wrong, or is this a limitation of the build > gpo > patch build > gpo process?
Does version 7 fix this? Keep up the good work though, InstallAware rocks!