Help with an old gmax tutorial

[AdmiralAlbia]

About six years ago amycus posted this incredibly helpful guide to porting meshes from Dragon Age 2 to Dragon Age Origins, which I'm attempting to follow in Gmax. Unfortunately I'm a little stuck, and the original thread is so far out of date that I doubt I'd get much joy from resurrecting it :tongue:

 

I'm stuck on step 13, at the top of the second post. I've followed the steps as laid out exactly, several times, to no avail - every time, I press delete and either nothing happens or both meshes I'm working on disappear. I also note that I'm never asked to move the DA2 mesh's UV map back into position? Shouldn't I do that at some point?

 

The obvious thing to do is to manually detach the meshes and then delete the extra one, but I can't find a way to detach them - the detach button greys out, and once they're attached I can only select one of them as the other seems to meld into it. I don't suppose there's anyone out there who can help me understand where I'm going wrong? I'm a complete beginner and I really have no idea what I'm doing here at all - and since this is basically a hack, YouTube videos aren't helping much.