subdomain mulitsite on localhost in a subfolder

I have a sudomain-based WPMU installation locally with xampp. My vhosts lists domains like follows:

The WordPress MU Domain Mapping PlugIn maps “real-domains” on system-subdomains.

To have a standard project structure, I would like to move my installation from the documentRoot to a subfolder.

My question is, what do I need to do, to accomplish that and will it have any consequences for the compatibility between my local- and a live-system?

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