ExpressJS Sessions and AWS Elastic Load Balancer Stickiness

I want session affinity on my expressjs hosts that sit behind an AWS Elastic Load Balancer.

To do this do I put the 'connect.sid' cookie as the parameter if I "Enable Application Generated Cookie Stickiness" when enabling stickiness?

This assumes of course that I don't change the default cookie name in express.

Do I have to worry about the ELB clobbering my cookie?

Thanks