---- Updating content leads to lost rank, did incoming link value change?
aakk9999 - 2:25 pm on Aug 11, 2013 (gmt 0)
It might be a good idea to experiment and change one or two of them back and see if it makes a difference.
Good suggestion from Planet13 - I think I would try the same - pick one page, revert it to what it was and wait a few weeks. I would also suggest that after reverting, you do Fetch as Googlebot in WMT and then execute "Add to index" to try to speed up the indexing of this page.