Updating (or trying to) recipes


So, we have 2 chef servers. One for Prod, and one for everything else
(Dev/Stage, etc.)

The Prod chef server has been around longer, while the other is fairly new.
One recipe in particular, is at version 0.1.6 on both servers.

On the newer server, that the only version on the server.

On the older one, this is the 6th version.

Here is the problem.

The changes we have made to the recipe are not appearing when we look at
the recipe thru the gui on the older server, but they are appearing on the
newer chef server.

What are the rules for forcing the chef server to pick up the changes to a
recipe when uploading a cookbook?