Perforce and .xpj files

I've setup a couple of RoboHelp projects in Perforce using this guide: http://www.adobe.com/devnet/robohelp/articles/perforce-integration.html

Everything is working fine, aside from the .xpj file from RoboHelp (that contains the source control connection details) also syncs with the Perforce server, and if multiple users connect to the project, it does not save each user's details to the .xpj file.

Excluding the .xpj file from syncing with Perforce means that when you first pull the files down from Perforce, you cannot open the project (as there is no .xpj to open!). If you don't exclude it, you can open the project once with your Perforce login details, but next time you open the project in RoboHelp, it asks you to login with the users details that first added the project to Perforce.

Anyone any ideas? And i hope i explained that clearly enough