How to migrate 2 Multisite installs that are in one directory.

I have 2 WPMS installs, each one has a paid domain, but I have them both in one directory(?) so I pay to host one site, not two sites. A web host did that for me.

Each Multisite is contained in its own separate folder at the top level in the http/live section.

I need to manually migrate the setup as is to a new host.

Questions:

• Can I use the instructions for a standard WPMS migration
• How or can I migrate content instead? I thought to try to migrate the content for each site into clean Multisite installs. I don’t know if that’s advisable. But I don’t understated how both WPMSs are created in one directory at the same level under only one of the domains.

Factors involved:

• Cannot use plugins for backups etc. Don’t know why.
• New host cannot use their plugin to migrate.
• User limitations. I’ve used WP for many many years I’m familiar with but not knowledgeable about the site files, folders, and structure. And I’ve never migrated a website.

Any input or advice is greatly appreciated.
Thank you

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