EX4300 Series and auto-sw-update query

Hey good day to you all,

I recall using this feature in past:

https://www.juniper.net/documentation/en_US/junos/topics/task/configuration/virtual-chassis-ex4200-software-automatic-update-ex-series-cli.html

I have RMA scenario where the backup member is two-member VC stack needs to be replaced. Is the feature still applicable and are the any need-to-knows and/or best practices to look out for in order for the replacement to go smoothly?.

I understand the s/n must be updated on master to reflect new member.

Thanks in advance !