Bit of a strange question regards the Cloudflare cache. We have a single WordPress site with multiple domains all pointing at the same source files. The various domains are used for language translations on the site.
We want to move the site to a new server but the Cloudflare cache is doing such a great job of speeding up the site we don’t want to change the DNS to point to the new server and things instantly slow down. So if we changed one or two of the sites so their DNS points to the new server is Cloudflare intelligent enough to cache the common resources used on these domains so when we change the DNS on the next domain a cache is already built up and the speed of this domain/site not affected?