Switching branches and TAB

[berk . dev]

I am using ClearCase as a source control and emacs for eshell. If I pick a view 
(similar to changing branches) before launching emacs&, when I am typing a file 
path in eshell, i can press tab to finish the path name for folders and files. 
However, if i launch emacs& and then set the view, the ability to press tab to 
finsih the path name does not work for some files. This also occurs when 
setting to a different view in eshell.

So whenever I would want to change views, I could start up a new emacs& to 
avoid this problem. Is there someway around doing this?