I'd like to change it to the day and name format http://aboutcolonblank.com/2013/11/05/sample-post/.
I don't, however, want to lose all of the search ranks/trust from the old posts. I also don't want to have to redirect all of them individually because there are thousands.
So, if I make this change, will WordPress take care of those redirects automatically? Or is there a plugin that will do it, if not?
[ Please do not bump, that's not permitted here. ]