Msg#: 4557139 posted 9:54 pm on Mar 21, 2013 (gmt 0)
There is a recent thread about the reasoning behind redirects and loss of link juice. Turns out it was all based on ancient html-style redirects where the user is presented with an option and can choose not to follow it.
But in your specific case: if URL #1 is /10082010/news-story1
and URL #3 is /2010/08/10/news-story1
why on earth wouldn't you redirect straight from 1 to 3? It's a single line in htaccess, assuming the text part is the same as in your example.