I have an ecore metamodel that has a class with an EReference to the Activity class from the bpmn metamodel (which came from the bpmn modeler editor). To do that, I simply right clicked->load resource->browse registered packages->choose http://stp.eclipse.org/bpmn. It gives no error and validates sucessfully when opening the file on Sample Ecore model editor, but when I open on OclInEcore Editor, this line:
has an error, stating that this import is unresolved and null.
When I restart eclipse, it evens change that eReference to an Eobject. If I do not open the file on OCLinEcoreEditor, when I restart eclipse it stays with the correct EReference.