HaloMods "Classic" Read-only Archive

I need to know to inject my texture into the .map file. I dont see anything for it on HMT. All there is, is batch extraction (which I had to use in order to get the textures out) and extract raw meta and inject raw meta. So basically what Im trying to say is, how do I inject it into the map file?

thanks. but now how do i inject it?

How do I get the textures out of the map file? Im using halo map tools and whenever i press save nothing happens.