I'm doing my (limited) best to follow this thread, and at the risk of muddying the waters even further... is it possible that this is simply a mix up of terminology?

Cath is rotating her image map, so is correct in saying that the coordinates of the map will be reversed, while bagginsbill is basing his (also correct) argument on the orientartion of the Poser scene itself, which will of course remain stationary in repect to the image map so doesn't change orientation.

There you go.  Now you can both have a go at me for being ignorant instead of fighting each other. ~lol~

The liver is evil - It must be punished.