Hello,
I have two instances of WPMU running on virtual hosts that share the same IP address. I am migrating a blog that uses domain mapping from one instance to the other, so the A record for the mapped domain is already pointing at the IP address. Mapping is successfully working on the current server.
I've successfully duplicated the site on the 2nd instance of WPMU. My plan was to simply delete the mapped domain from the first instance and add it to the second. However, it didn't automatically map to the site on the 2nd instance, instead delivering an error page. So I cleared my cache and checked it from other browsers, to no avail. I waited a bit and tried again, still no luck. I had to turn it back on as the site is live (albeit not yet promoted in any way).
Is there a domain mapping cache I need to clear after deleted the mapped domain on the first instance? Is there any length of time to expect the change to take effect? Is it even possible for me to make this changeover take effect without deleting the first instance of WPMU?
Many thanks.
Patrick