ZBrushCentral

"mrg" merge UV Coordinates doesn't work

Hi there,
I have an annoying problem: whenever I export my sculpture from zbrush, it splits all UV’s apart. I know about the “mrg” button in the export settings, but it doesn’t seem to have any effect.
I use 4R5 and I already tried a reinstall.
I also tried to weld the UV’s in Maya and then reimport the mesh into Zbrush, but as soon as I export it again from Zbrush, all the UV’s are split again.
Could it be that the tool itself is somehow currupted ?

Attachments

Unbenannt_zpsd9400c7f.jpg

Unbenannt2_zpsa78dccf7.jpg

Unbenannt3_zps383ced47.jpg

bump… please, anyone knows a solution ? I’m so frustrated about this…