Check your mental ray settings, check your UV layout...

It looks like a bug in new versions of Maya. I have tried this tutorial too. In 2016 uvset linking doesn't work at all. Textures are not switching. ((

I supposed that it is another way to baking textures, like mental ray batch bake or baking from hypershade... But no...
There are two buttons in texture editor and they do nothing. When I press in...

Try another tool to get a similar result. For example, you can select needed faces and apply planar mapping to it. Or uv from camera.

CollinBishop, it is free, but it doesn't work in 2014 version of Maya. I have tried to find the appropriate command in the script editor, but this thing refers to a plugin that doesn't work. Flipped...

Does anybody know a command, that can select only flipped UVs? Without full layout all UVs
( Like a TwinAssetChecker here: http://twincodes.com/TwinBonus_Download_en.html )

I can't find where is it?

But I found another solution to this problem, normals --> harden edge