Plotstyles, the lineweights are wrong

We have a problem with plotstyles. The lineweights are wrong. When we ploting the same drawing with the former 2D-Editor, everythings is OK.

Now we ploting the drawing with draftsight --> lineweights are wrong. We used the same plotstyle.We tried to creat a new plotstyle in draftsight. That didnt helped! Same wrong result. What to do?