Saving PDF of drawing creates display problem

[Spurs]

I am having a problem with a drawing. I am trying to draw a reference circle on top of one of my drawing views. After I draw this circle, its line color changes to a faded line.

If i do a print preview,the circle is visible

If I save the file as a pdf, the circle is invisible

Any suggestions on how to prevent the circle from becoming invisible when i go to create a pdf?

Thanks

 

[Finethread]

I could not repeat what you are seeing but you may want to try to change the setting in Page Setup to Black and White.