When changing over our patron cards from Postscript points to SI Millimeters, I noticed that while the layout coordinates switched over to mm, the image display heights did not. I tested with a new layout and encountered the same issue. Changing the display height from 30 to 11 (the approximate conversion) it shrunk significantly. Setting it back to 30 returned it to how it was. To reproduce: Create a card layout with an image and use points as the layout unit * Export a PDF output * Change layout unit to SI millimeters then save * Export another PDF output * Compare PDFs - confirm they do not change in size.