Move activation to a different lifeline?

[Jeff B]

I have had several cases where I have a fairly complex sequence diagram and need to shift an entire activation (including its lower-level messages) to a different lifeline.
When I move the end of the initiating message, EA is splitting the activation and leaving the remainder of the lower-level messages on the original lifeline.  (I then need to move each event one at a time.)
Does anyone know of a way to shift the entire event sequence to a different lifeline?

Best regards,
Jeff

[Eve]

I don't believe it's possible using the GUI, but you may be able to do it using the AI.