Update your project to use the most recent versions of
files, directories, or projects from other developers. Your work area
is insulated from changes until you decide you are ready to update
your project.
Procedure
Right-click over the appropriate project, and point to Update. If you are updating a project, choose Members
Only or Members and Subprojects.
If
you are updating a project from a project grouping, choose All
Projects or All Projects and Subprojects.