For an example...
In mspace, I draw a line from 0,0 to 3,0 with a line type of 'zigzag' at .5 scale. I then draw a copy of that line just above it. I then do a 'paint' of the properties from the 1st line to the 2nd line and they are not the same appearance in AutoCad, (both on screen & printed.). - Though the line's scale property remains the same on BOTH lines.
The same thing happens if I take line #1 and simply change it's layer or color or .... The appearance changes as well, even though it's scale property remains the same.
The problem has been mentioned long ago, and the answer given was something to the extent of 'that is a longstanding Autodesk problem. - No fix'.
craigr