Mangoo item editor 3.4 beta question?

[Nazareth66]

I could not find any help, or get to the website in the help folder. The problem I am having is prolly something I am doing wrong, everything works fine, just I can't seem to get items changes to take in game, when I make changes, I get no errors, and when I reload the items from the database they show the custom stats still I added. I tried making a copy of the item and saving them as .sql and sourcing them into my database, could it be the .itm save option, I used it and see it saved in the save folder but don't really know what to do with the saved .itm file. Any help or a short walkthrough of how to use this item editor correctly would be great, thanks in advance for any help.