Richard.
Then I'm confused. We use PDMS. When I wrote the export to CII 5.2 Neutral File code, I did a rotation about the Vertical Axis so the Plan View (Top) in CII matched a plan view in PDMS. When we started using CII 5.3, I had to change the rotation to get the matching Plan views. Now with the new build of 5.3, it appears that I need to change the rotation back to match 5.2s.
So Something has changed.