Painter Export preset problem

Sebostian

Whene I try to use my own preset PositionMap for ourput maps like ms_$textureSet_pos 
export windows show me whis
 

But result is allways like $mesh_$textureSet, and I can't change it at all.

Painter Version is 2018.3.0 2570

Sebostian

And it's only with PSD format