PS Zuki,
When you go to that page and select the top tab, it AUTOMATICALLY selects STS 1, if thats the one you are working on, or STS2 or 3, etc so be aware of that when saving.

Also if you change to another STS before saving the one you are using/editing (to either a songbook entry, or the STS within the style) it will revert back to the original.

It really is a case of "save as you go".

Dennis