The setup is as follows:

Server 1 - NW4.11 SP9 (DS611) and Groupwise 5.5
Server 2 - NW5.1 SP6 (DS7.61) and Groupwise 5.5 POA
Server 3 - NW4.11 SP9 (DS611) and Groupwise 5.5 POA
Server 4 - NW4.11 SP9 (DS611) and Groupwise 5.5 POA.

We are to replace all 4 servers with OES Netware 6.5 and Groupwise 7.

Ideally a new tree would be benefical in order to have a fresh new
structure.

I am looking for the best migration path between the above current setup
and the new:

Server 1 - NW6.5 and Groupwise 7
Server 2 - NW6.5 and Groupwise 7 POA
Server 3 - NW6.5 and Groupwise 7 POA
Server 4 - NW6.5 and Groupwise 7 POA

Regards