Page is a not externally linkable
-- Google SEO News and Discussion
---- Google sitelinks disappeared after I renamed some urls
tedster - 8:01 pm on Apr 8, 2009 (gmt 0)Thread source:: http://www.webmasterworld.com/google/3888043.htm
It could be any timescale at all - but I'd say your chances are good for a relatively quick recovery (just a couple months) if the content you offer remains strong and your traffic maintains its pace.
Brought to you by WebmasterWorld: http://www.webmasterworld.com