Changing WP Multisite from dev subdomain to live

[AlanQ]

Hi all, I've been developing WP sites for years but I'm doing my first project on a Plesk Windows server and need a little help.

It's a Wordpress Multisite site on a subdomain, i.e. dev.domain.com, dev.domain.com/site1, dev.domain.com/site2. I'm looking to move the entire thing to the live site (replacing what's already there) to make it domain.com, domain.com/site1, domain.com/site2.

The WP side of things I'm confident with, changing URLs in the database, etc but I can't quite get my head around the Plesk side of things. Any help would be appreciated!