Joshmc - 10:51 pm on Oct 13, 2011 (gmt 0)

Hey the developer made a mistake on my site where he removed a character from urls and it ended up 301ing about 20k pages of the 300k that are in googles index. This happened about 2 weeks ago and it has been indexed with the new urls but webmaster tools has 30k duplicate title tag errors, which is how I even realized this happened.

I was wondering, should I spend the time to un dev what happened back to the old links or should I just move forward with how it is since they 301.

Im asking this because my long tail seems to have suffered after goolge indexed the new pages but I want to know whether un 301ing them will even help it come back.

Thanks!