Battlescript variables...

There might be another thing related to Veldt: Gau's appearence script when you beat a Veldt formation... is that code called only if it's a Veldt formation? I mean, if you removed those formations, but you're still walking in veldt area of map or battle BG is the one of Veldt, is it possible that Gau's spawn code might trigger?
In any case, do you know where's that code and where's the check that tests if Gau have to appear or not(and so trigger the code which makes him spawn)?
If i delete Veldt, theorically there's no way that this code might be triggered somehow, but maybe i might use that space in a different way, you know...