This is a situation reported to me by co-worker.

Windows Host IDE 4.5 setup for 6.3.2 and custom makefile.  Most people work on multiple project at the same time which 
are all branches (SVN) of the same root project .  When building a project, the Problems view will show the error but 
will specify the resource as being from another project then the one from which the make target was launch.

I'm also told that when "Opening Declaration" of a symbol a windows with multiple choice shows up that offer items that 
are in other projects. 

Is there any way to disassociates projects.