One of my colleagues asked today, how do I get those paper-space dimensions to work? As I tend to dimension in Model space (I need to research associative dimensions) on differing layers per style I never see the need to use paperspace dimensions.
So after a quick perusal of the Dimension style box, there is a check box to make the style to scale to paperspace. Cunningly called “Scale dimensions to layout”!
However strangely this did not work. After further searching I found that if the paperspace dimension is different when snapped to differing scale viewports then the DIMASSOC variable is most likely to be set to 1. Set it to 2. Then all will be good.