Assembly Saved as Part

Trying to output a model that our manufacturing guys can use (part file) but one issue I'm running into is that the software does not recognize more than one of the parts in the assembly.   I believe this is due to the individual bodies in the part being separate bodies.   I have tried to combine the bodies but it does not actually join the 2 bodies rather adds another combined feature to the tree.   Is there a way to save the assembly as a part file with all the bodies combined?  I'd rather stay away from a parasolid file so that revision information can be relayed in PDM.

Thanks

SolidworksAssemblies