bingbot=bingbot
bingbot=bingbot/2.0
bingbot=bingbot SitemapProbe
Are all the same thing.
USAGE: SearchEngineName=AgentBotString
The "AgentBotString" on the right side of the equation will search the whole "Agent" and return the matching "SearchEngineName"
So basically, if only list "bingbot=bingbot", you will cover all the other variations of "AgentBotString" for Microsoft's Bing spider/bot.