Well, original map is from you, it's a fact. But don't worry, I always credit guys when I used their stuff or a part of their stuff.
I don't know if you have downloaded the mod, but there is a new credits file in the system data. And look at the names, you're in it once or twice (don't remember ^^)
But of course I love what you do and love your mod and I'm not here to steal your work so excuse me if you thought I'll not credit you and if you thought i'll steal your job :s