I have submitted my site into yahoo. My site age is approx 3 months old and i changed meta information 2 months back but still yahoo shows old meta information. I have submitted yahoo sitemap.
How much time Yahoo will take to update my site index information?
The best thing to do would be to submit a support ticket / help request through at help.yahoo.com. YDN does not have access to the indexing structure of yahoo.com so that would be your quickest option.