Error trying to use visual after refactor

I have a netbeans platform project and just refactored everything in all the modules to different package names. Everything works fine except that now there are some JPanels that I use the NetBeans visual editor (matisse?) on that won't load anymore.

They always say something like: 
Error in loading component: [JPanel]->_myPanel
Cannot load component class a.b.c.MyPanel
The component cannot be loaded.

Except now the class is named d.e.f.MyPanel instead of a.b.c.MyPanel

I have verified that the references are correct in both the .java and .form files. I have done a help->about in the IDE, closed all open modules, exited the IDE and removed the cache directory listed there and yet something still has the old package names cached and won't let me use the visual editor on them.

Is there some other location that NetBeans caches this type of information that I can clear to fix this issue?

thanks