Thought it worth noting that as part of aaa-reports! we have various VBS scripts for exporting the ACS database into csv's containing usernames,groups,devices & NDGs.
Passwords are not included, but its useful to get basic data out for admin purposes.
You can import all this into aaa-reports! if you want to report on your T+ device admin policy.
The scripts are on our download page.. goto extraxi.com then follow the links for the trial version.