Basically it allows you to "switch memory cards" like back in the old ps2 days. It's not super advanced, and the save has a checksum that so far no one has been able to crack, so it doesn't allow you to copy guys from one save to another (use the CC for that)...but it does allow you to easily switch between say all Original created wrestlers and your ROH/Indy save...and with only 50 slots, I have a feeling I'm not the only person who doesn't like mixing themes regarding their created wrestlers.
When you first start it up, you'll have to select your "/Steam/userdata/<USER ID>/" folder. The program will find the "/Steam/userdata/" as long as steam is installed in the default location on a x64 OS. This means all you'll have to do is pick the correct USER ID directory. If your Steam is installed in a location other than the default, you'll have to find the directory yourself.
***Also, I've done plenty of testing, and it has always worked fine for me, but I'm not responsible if something screws up your save.***
Edited by Carlzilla, 28 June 2015 - 04:23 PM.