Hi Shawn,
No, PlantSpace Isometrics is a spec driven drafting package for creating isometrics whereas OpenPlant Isometrics Manager creates isometrics from a 3D model using the PlantSpace IsoExtractor engine.
Now that being said there are some common configurations that PS Iso and IsoExtractor shared and those can be reused.
Can you be specific on which configuration you are referring to?
Regards,
Ian