Linetype scale

There is some trouble with the Linetype scale. If using f.ex. dashed linetype, I have to scale the entities 1:1000 if plotting 1:100. In Autocad this is better coordinated. If using only IntelliCad-drawings this is ok, but it is a problem when using an Autocad-drawing with dashed lines as an x-ref. What is the meaning – and how can I got this solved?