I stumbled upon this WP.org support thread and tried the solution…
Go to Network Admin -> Sites -> Edit Site -> edit the site URL.
It appears to work smoothly. No issues with SSLs.
One added step I needed to perform was adding these lines to the bottom of my Bedrock site config @
define('ADMIN_COOKIE_PATH', '/'); define('COOKIE_DOMAIN', ''); define('COOKIEPATH', ''); define('SITECOOKIEPATH', '');
Without those additions I couldn’t login to my subsite (source).
There’s been a lot of chatter on this board lately between devs running Trellis + Multisite + Multidomain setups (@Simeon @darjanpanic @Foazino @colinob1 @cclass @rhud @JSDieNeu @DemaniClassic @daniel @juanmaguitar @Helen_Humphrey) and I’d love to put this out there and see if anyone else has tried this long term and any problems you may have encountered.