This wouldn't be possible, as the BPEL process name etc would also have to be different between the two deployments.
The safest option would be to have two JBossAS environments, one for dev and one for test, using different ports (if running on the same machine) - and then you simply need to copy your dev BPEL archive over to your test environment without having to change anything.
thanks very much for such a prompt answer.
One additional question (performance issue):
Is it better to have two completely separated JBossAS installed
or to copy e.g. 'default' profile, configure another port for it and run?
Sorry don't know the answer to that one - you'll need to post that question to the jbossas team.