We have website which uses wordpress and have around 2000 posts. The format for url we choose was http://www.abc.com/xyz/post-title but not we want to change it to http://www.abc.com/abc/post-id/post-title something like stack stackexchange, but since we do have a decent google juice for the existing urls we don't want to loose that. I know some people told me we can use Permanent redirect and the juice will flow with it. but i am not very confident on that.
Is there a way we can customize wordpress so all future posts follow the new url pattern and past pages remains the same.
Any solutions to this is greatly appreciated.