What layout tool are you going to?
Depending on what PCB design tools your designer is using, there may be available netlist output from the Tools -> PCB Interface. To see what is available in your install of MG, bring up the project settings (Setup -> settings) and on the Project page, look at the Layout Tool pulldown. This will list what is available. From what I can tell, Export -> Analog netlist pulls a dxsim_c feature license. Our setup only has one of these licenses (possible source of problem). Hope this info helps!