trying to get https to work with domain mapping

Greetings, happy new year!

I am having trouble getting https working on a mapped domain in my multisite set up.

I have https working no problem with my main site.

I have set up the https for my mapped domain on my server and can verify that it works.

However when I set the ssl to point to the domain on the wordpress server once it is mapped, it goes from https://www.domain.com to https://www.domain.com

Is there a setting I am missing on the wordpress side or the plugin side?

Has any body had issue with this? Doing this is necessary to allow a client to be able to take stripe payments with the marketplace plugin.

Thank you for help.