Converting older Plant Basic dwgs to Isogen enabled.

We just upgraded to Plant Professional and are trying to figure out if there is a way to convert older piping models to Isogen enabled so that we don't have to redraw everything on a couple of ongoing projects.
I'm really looking forward to saving time with Isogen and the Equipment program seems very cool.
FYI: We are running Plant Profesional 2010 on AutoCAD 2008.
Any help would be much appreciated.
Thanks!

The only way to do this is to get Intergraph involved. They can convert models for you, but I had to jump through more than a few hoops to have ours converted back in the day.

Thanks for you help, I'll contact COADE.