When you add an IMAP4 account, the folder you see in GroupWise represents the folder on your IMAP4 server. Your IMAP4 account items are always stored on the IMAP4 server. Any actions in the GroupWise folder, such as creating or deleting, are also performed on the IMAP4 server. Because your items are always stored on the IMAP4 server, you can read those items from more than one computer.
The Find and Proxy features are not supported in IMAP4 folders.