Question : Copy & Replace Outlook Folder Items over another

Is there a way to copy and replace in Outlook 2007?

What I mean is this.  I have folder A with sub folders B thru D.  Folder B and C have partial information.  Now in another folder I have folder A1 with sub folders B thru D.  Folders B and C have the other information.  If I attempt to copy Folder B instead of it replacing or filling in the blanks it will create Folder B1.

I understand this is the default functionality of Outlook; but wonder if perhaps I could move/copy over Folder A and it's subfolders with the contents of Folder A1 [which has the exact same structure]; and in those instances it would simply replace the information very much like one can do with files in Windows Explorer.

Appreciate the input - thanks!

Answer : Copy & Replace Outlook Folder Items over another

I have found the solution, under "IP Addresses" the domain was not specified as the default domain.