[Plugin: WordPress SEO by Yoast] Bing Sitemap

I am using Yoast site maps with Google OK.
However when i add them to Bing it is only accepting the post-sitemap.xml. when i try adding the other maps is is not coming back as pending. I get no Error Message just a refresh. of the screen.???

Is yaost maps compatible with Bing?

http://wordpress.org/extend/plugins/wordpress-seo/