A couple weeks ago, Google made me and many SEOs very happy by adding a verified change of address feature that allows you to tell Google you are moving domains.
Today, I learned from a Google Webmaster Help thread that this does not work on subdomains. This might not seem like a major issue, but if you take Google's advice when moving domains, you likely want to move your site or domain in pieces.
So if you do separate your site out by subdomain, moving pieces of your site by subdomain makes sense. This way you can slowly move your site and make sure Google and other search engines pick up on your changes.
Not having a way to move a subdomain of a site can then be an issue. In addition, if you sell off a subdomain of your property to a different site, a move of domain, in this case, also makes sense.
JohnMu of Google appreciated the feedback and said he would "pass this on to the team."
Forum discussion at Google Webmaster Help.
