Ok, so I've been working on upgrading from 2003 to 2010 but having some difficulties. I see all the Public folders on the 2010 exchange server, but, they have no content. If a user adds content to the folders it doesn't sync to the 2003 and doesn't work the other way around. I'm not sure what step I am missing. I can't move the public folders, but I need them to replicate so that my 2003 users can still get to them. I have waited 5 days for it to happen and not luck yet. Some of my 2003 users are getting errors trying to connect to the public folders, and I really need to get this fixed, Any help would be appreciated.

Hi You can read this blog about process of public folder. Terence Yu TechNet Community Support