Hi, Elizabeth. 

You should be able to get your plugin running with just a few tweaks, but I think it's always a good idea to refactor using the new templates in the default plugins. So you might think about doing the change in two phases: phase 1, update the old plugin working in the new version of the OT; phase 2, create a new plugin and refactor your old style sheet piece by piece to work in the new OT.

Bill

Hi Elizabeth. It's always great to plan ahead. That said, SDL Professional Services can try and hook up your existing DITA-OT to the upgraded product and see if we can get your PDFs building. DITA 1.5.2 is a pretty old Tookkit version so it's not a bad idea to think about upgrading it.

Hi Elizabeth. It's always great to plan ahead. That said, SDL Professional Services can try and hook up your existing DITA-OT to the upgraded product and see if we can get your PDFs building. DITA 1.5.2 is a pretty old Tookkit version so it's not a bad idea to think about upgrading it.