@3D_Laser I’ve been using RDworks mainly as last step in process. I use Corel draw for file conversion, trying to get better using the trace function.
I don’t like the Laser plugin as it lacks some control.
I design or create things in sketchup or Google Drawing
It might be down to your settings on the export file.
But one trick is to add a line to the side that you know the length of, say 40mm
When you import check the size of the line and then adjust the entire project based on that.
Does that make sense?