Problem with yUp in maya (required for dynamics to work ? hence keep default yUp)
Some export format from rhino to maya does not automatically swap the y & z axis
rotate either required before export in rhino or after import in maya (roatex -90)

Macro to rotate and export in rhino:

 _SetActiveViewport Right
rotate
copy
0,0,0
1,0,0
270
_Enter
selLast
Export
delete

Macro to rotate and import to rhino:

import
_SetActiveViewport right
rotate
0
90