[news.eclipse.modeling.gmf] Add sub-nodes programmatically after creatin

[peter_l@xxxxxx (Peter Lang)]

When creating a node using palette, I display a wizard, and depending on 
the users selection I add sub-elements to the newly created node 
(displayed as border items).

I realized this with a custom CreateCommand, where I add the sub-elements 
after the parent node has been created. This worked fine with GMF 2.1.3.

With GMF 2.2 it seems to work too, sub-nodes are displayed properly. But 
when I save, close and reopen my diagram, the sub-nodes are not displayed 
any more.

I have split diagram/model files. The sub-elements are in the model file 
but they seem to be missing in the diagram file.

Is there a better way to create the sub-nodes?
Is this a bug?

Thanks in advance!