I have a multisite installation with two sites (so far) - the main site (in public_html) which is accessed by domain1.com and a subsite which is accessed using the Domain Mapping plugin by domain2.com.
My main site became a plugin/theme conflict disaster. I made a completely new WP multisite installation in a subdirectory (public_html/new) and re-developed to get it exactly how the main site should have been. This is not a subsite of a the original multisite-- this is a new separate WP installation.
Now I want to make the new site that is in "public_html/new" to become my main site at domain1.com. And I want to keep my old site functioning (somewhere, like maybe domain1.com/oldsite). And I want the subsite (domain2.com) to still work as it works now because it seems if I move the original multisite installation, I will lose the subsite.
Using some combination of Domain Mapping and Snapshot, is what I described possible? Could someone list the order of steps I would need to take?