TS 6.7.1 - Unix groups/TS Groups

System

I remember a long time ago there were some really good threads explaining how group permissions would work when switching from only Unix Groups to the new TS Groups. I used the Search feature here to try and find the old thread, but I only found a dead link in one of Ghoti's threads that referenced the thread I am speaking of.

Does anyone still have that info? Is it still around? We are in the process of upgrading from 6.1 to 6.7.2 and we need to get a thorough understanding of managing groups using the new TS Groups and still dealing with Unix Groups as well for files and directories.