weddingm - 3:56 am on Dec 13, 2012 (gmt 0)
I just removed a cms on my website. In order to keep the php pages, I had to change the file names from .htm to .php. I did a 301 redirect on all pages. However, I noticed in webmaster tools that they were no longer indexed the next day and after a couple days only 10% were added back into index.