Workflow between Rhino and Qgis

Hi there,

When working between large georeferenced projects in Qgis, and exporting them to rhino, then reimporting vector data back to Qgis for geoprocessing, there seems to be distortion. My site is 1.6km squared.

What’s the ideal workflow to limit distortion, or apply same transforms back and forth to limit overall distortion?

I’m thinking that perhaps all QGIS data could be reprojected to have no CRS, to match Rhino’s X,Y,Z purity?

-Jeremy