Change a Sub-Project to be a "standalone" project

I have searched but cannot find an easy answer to this.

I am working with someone who created a Master Project and sub-projects using Project Server 2010 and then deleted the master project, the sub-projects can now only be accessed in PWA if the sub-project tick box is checked.

I know that Project uses a numeric identifier to distinguish between, master, sub-project, standalone and "Resource Pool" in a .mpp file based use of the tool. I assume that a similar numeric identifier exists in the Project Server database. Does anyone know how to edit this value to change the status of a "sub-project" to a "standalone" project?

I saw a previous post from Marc Soester about opening the "orphaned" sub-projects and making a nominal change and then re-publishing the project, can it really be as simple as that to fix this issue?

Dominic Moss | MAPM Microsoft Certified Technology Specialist | Our Newsletter:PM News Project Server SpecialistsProject Server PRIME | Twitter:@Twitter | Facebook: @Facebook | Linkedin: Wellingtone