Impossible to update aliases?

Hi,

I have changed the way I would like pathauto to create aliases. Now I would like to update all my website, but it seems it is impossible. There is an option to create aliases for nodes that do not have one, but not to update old aliases.

As I use path redirect as well, what I would like is a bulk way to update all aliases on my website, and create redirection from old aliases to new one in path redirect.

I have checked for individual nodes when I change the title, and it works find, but any way to do this in bulk mode?

Thanks