
He registered a web domain www.abc.com and mapped it to abc.blogspot.com by changing the CNAME record
to point to ghs.google.com. The blogger-domain mapping was very smooth but he now wants www.abc.com to point to xyz.blogspot.com instead of abc.blogspot.com
Shuaib deleted the abc.blogspot.com blog to free the domain and then tried to map xyz.blogspot.com to www.abc.com but Blogger is not letting him do that with the error - "Another blog is already hosted at this address"
Though his old blog is deleted from Blogger database, the mapping record probably still exists. It could be a bug in the new Blogger
While you can do nothing about it, the issue can be resolved by writing to the Blogger Support as it requires manual intervention.
The page to contact Blogger support is blogger.com/problem.g
You can also post a copy of your support request on the Blogger Group from where the Google support team represented by Blogger Buzz and Blogger Employee can pick it up.