Drawing Units

Geomagic 2D drawings are defaulting to Metric units when using not using a drawing template. I use standard landscape mode for exporting my parts into my CAM program. This used to work fine but I must have changed something somewhere by mistake.

The Part properties are set up for inches when designed, but the drawing is always in mm.
I have to go set the primary units each time in the Drawing Properties, but for Dimensions, the "use as default" check box is grayed out.

Anyone know how to get my defaults back?

Using Geomagic Design 2015.1.1

Can you change the drawing units from "File | Properties"?

Yes, but the Make Default is not enabled so I have to change it every time. I think I fixed it by creating a new Dimension Style, then setting it as the default style. Once I did that, I was able to modify the Default style and apply changes and it stayed. Weird, but it's keeping them now. I ended up creating three dimension styles, english, metric, dual dimensions.

Richard