BladeGen and CFX - basic question

Dip

I have created the impeller and diffuser(simple axial) in Bladegen, and created the mesh for each separately in TurboGrid. When I read the file for Stationary section and Rotating section in CFX, the mesh volume are overlapping each other. As if they are referencing the postion as they were created in BladeGen. How do I align these? Is this the right procedure? Or do I have to calculate the position and model it accordingly right from BladeGEN ?

Related second question. If the number of blades on impeller and diffuser are not same and therefore the assembly (as CFX conventionally does) would have the impeller blade and passage little offset to the diffuser one (as per 360/no. of blades etc.)

Is CFX doing this matching or alignment automatically or do I have to manually calculate and offset the two.

Thanking you Dip

Thanking Johnny, deLuther for previous answers and getting me started.