How to change authoring information with Rules? I'm trying to create a rule that fires upon saving a node with a few conditions.  The rule takes the current author, and sets it in a field called "field_original_author" and after that changes the value of the current author information to a particular author.

It does the first bit but not the second. Even if I only use the second part, it still doesn't change the author information into the other author that I specified.

What gives?
I can't remember exactly, but you can create an action "Fetch entity by ID". Add user as the entity type, and create another action "Set a data value" with selected data [node:author]