jdMorgan - 8:38 pm on Sep 30, 2010 (gmt 0)
You'll need to get a new verification key I believe, regardless of whether you use the meta-tag or .xml file method.
In all fairness, this is not a bingbot thing, but rather a result of switching from MSN Webaster tools to Bing Webmaster tools.
However, someone should point out to them that if they're going to go through all of this hassle --and put us through it as well-- then they should have named all of this stuff "MSbot" or "MicrosoftBot" and dispensed with the "cute branded name" for Webmaster-facing resources in favor of one that probably won't ever have to change again...
As it is now, we've got msnbot, bingbot, and Yahoo! Slurp all crawling for essentially one index, and no information on how long we'll have to support all these user-agents.