After searching for 'Int Mode' I've come across my own thread that i had forgot I started - I'm still having the same problem - Within Mix Maps, if I choose 'Use Mix' for 'Int Mode' the Transparency of the Mix works but the Fade Out seems to have this problem on being black at both 0 and 1 but viewable at around 50% at 0.5 - meaning there's no 100% image.

Anybody Else??
I'm guessing the only way to have Fading to 0 transparency with Exact Maps is use the General Controls and DMX.
If I could be enlightened to another way of having transparency of an Exact Map fading within a preset within catalyst it would be highly appreciated