BPS does not block the Yahoo Slurp bot or the Googlebot or any other legitimate search engine bots from crawling or indexing your website or any other legitimate thing that a legitimate bot does.
let me try and explain this again.
If you have some sort of script on your site or something else on your site that is related to sitemaps or SEO or something that relates to SERPS’s or the bot crawl and index is being done in a way that several different things are happening (ie 10 different things are happening and 1 of those things is blocked) or if the bot is not really the Yahoo Slurp bot and is faking the Yahoo Slurp User Agent / bot name.
If any of these things above are happening then the end result is the same: The Yahoo Slurp bot crawls your site successfully and indexes your site successfully. Whatever “other” thing whether it is internal (something installed on your site) or external (some additional thing that is being done BESIDES just crawling and indexing your site) it is being blocked and not the Yahoo Slurp bot crawl or index and the same applies to all legitimate bots – Google, Bing, etc – BPS does not block any legitimate bots from crawling or indexing a website.