Replacing a double texture

[impact]

I have a map with an alternating texture. If I open the bsp file with Quark, it displays a set of textures, and this particular one is animated, changing regular->red->regular in a 1-second interval.



Now, if I extract it, I get two files:
+0cblack2.jpg
+acblack2.jpg
However, replacing these with two 24 bit textures doesn't work. The game still uses the original ones.

Any ideas?

[Baker]

I'll look at it later in the day, should be easy enough to solve. Don't have time now.