And that save/load system is horrible, stop recommending it. If it's not Encoder, it's not good -.-.
These systems are especially bad-
All of the ones at TH, including the one you linked
iGen and CodeGen at THW
the one at wc3c isn't bad at all, but can't compete with Encoder 1.0 ;P.
This is the premier one atm, the #1
http://www.hiveworkshop.com/forums/spells-569/encoder-1-0-0-0-a-189883/
Currently, there is no save/load system that saves abilities specific to heroes (unit specific catalogs, meaning that abilities don't need to be saved, just the levels). However, Encoder 2.0.0.0 will be able to do unit specific catalogs.
People are waiting on Encoder 2.0 atm =).
Check out the last post on the Encoder thread to see the Catalog system that people will probably be using with it ;P.
2.0 is still underway, I'm trying to solve a really, really tough problem and have been unable to solve it ; (, but if worst comes to worst, I will code the portion I'm having issues with from scratch, thus solving the prob =).