Created attachment 837227 [details]
Simple process with event subprocess

Description of problem:
When you create a proccess containing Event Sub-Process, the validator is complaining that this node has no incoming and outgoing connections. But according to the BPMN 2.0 standard the Event Sub-Process is not supposed to have any incoming or outgoing connections, so this should be a valid process.

Version-Release number of selected component (if applicable):
ER5

Steps to Reproduce:
1. Download the attached process and import it into the designer.
2. Try to validate the process.

Actual results:
There are two validation errors - the Event Sub-Process has no incoming and no outgoing connections.

Expected results:
No validation errors.