The xsi help is funny, tells you exactly what it does but nothing about actually how to do it :D Ye, unfortunately like you said the texture projections need to be kept - I had them all frozen down. I found a script that actually copies your uv's and recreates the projection allowing you to apply it after it's been frozen.…
There's a few tricks around: http://forums.cgsociety.org/showthread.php?t=336096 There's a script at the bottom of the page. Or "Duplicate the original object. Delete the UVs on the original object. Gator the original object to the duplicate and transfer the UVs. Gator is placed in the modeling portion of the stack by…