Mmm, I tried the same thing you did.

Applying EZskin to v3 and save it to pz3, and import it into Vue.

As usual, I don't use Poser shader tree, and since I don't use it, Vue would ignore all the SSS info., so it should not affect the UV map at all I think.

When I rendered the v3 as you did, it rendered fine.

Whether or not I use EZskin, it didn't make any difference in Vue.

 

...just a little more info.