Page is a not externally linkable
-- Google SEO News and Discussion
---- 301 question - old and new URLs are both ranking
g1smd - 8:00 pm on Jan 18, 2012 (gmt 0)Thread source:: http://www.webmasterworld.com/google/4408087.htm
It's sort of good that both appear, as both will be bringing traffic - and your redirect ensures the visitor asking for the old URL actually gets to see the right content.
Brought to you by WebmasterWorld: http://www.webmasterworld.com