I think if you changes setting files it will be applied for all new drawings but not for existing ones which are already has their setting from previous setup
I have created project drawings with a matchline style (cyan, chained, thick, etc). I have changed the dra-gen-matlay (changed cyan color to yellow), but when I update drawings, there are no changes, the matchline have cyan color.
Thank you ruav. Yes, you are right. If you delete the match and matchtemp layer, the drawing will create them using the new configuration file when you update the drawing again.