Posting this here (hope you don’t mind!), as it’s sort of similar to what I want:
Imagine I have a site at mysite.com, and in that there’s a WP install at /wp.
I want to replace all the content at mysite.com with pages from WP, but keeping my existing blog at /wp.
So, basically, I’ll have an entirely new site at mysite.com, powered by WP, but all the stuff at /wp will remain as-is.
Is this possible?