I've followed your recommondations, which work, to a point. The converted file needs to translate into MasterCam as the converted part units. In other words if I change from metric to inch in Inventor 2009, the model needs to translate into MasterCam as an inch model. The methods I've been using the model translates to MasterCam in the orginal units, in this example metric.
Hopefully, I've missed your point, or did not follow directions correctly.
Any hints?
Thanks!