That's a shame. Well, until then, style based pens will make them look dashed the way they should be. It's just up to you guys to determine wether switching over to STB pen sets are worth it.
After using STB sets, there are tons of advantages, and I would rather use them, it's just hard to get everyone in a company on the same page.
It appears to be working for me. In this image, the left vertex is at 0 elevation, the right is at 260. The second image is essentially the same from 2012. I haven't done anything special.
Plinegen may need to be on prior to creating the FL/Figure. Was is set to 1 when the FL or figure was created?
I just tried it with featurelines in 2013 with both plinegen on and off and I saw no differences either way, the linetype was honored through the verticies (just like we all want it to). On a side note, this drawing was originally created in 2007 or 2008. Don't know if that makes any difference or not, just thought I would throw it out there.
Start with some of our most frequented solutions or visit the Installation and Licensing Forum to get help installing your software.