Line weight changes when pasting as picture

[Dom Sturges]

I have a drawing with a mixture of lines & connectors: some with arrowheads
and some without. All lines are set to the same weight (e.g. 0.5 pts).
When I copy it and Paste Special as Picture into another application (e.g.
Word), all the lines with arrowheads (of whatever style) come across - and
print - much much thicker than those without arrows.
This also happens when I include arrowheaded lines in an Excel chart which I
then paste-special into either PPT or Word. Even pasting into CorelDraw, the
arrowheaded lines still come in thicker.
Has anybody else experienced this and if so is there a fix or workaround?

Thanks in advance,

 

[Dom Sturges]

Thanks Steve. Unfortunately ungrouping and fixing polygons, every time,
before pasting into the destination document, is not going to be a practical
long-term solution.

Pasting the copied PPT graphic into Word as a bitmap does give consistent
line thickness but unfortunately, unacceptable picture quality for a
presentation graphic.