how to migrate the fs mountpoint from one DM to another

NS960 current：

server_2   fs1 fs2  in cifsserver1 ; fs3 fs4 in cifsserver2

server_3 standby

NS960 future:

server_2   fs1 fs2  in cifsserver1

server_3 standby

server_4   fs3 fs4 in cifsserver2

server_5

customer plan to add two more datamover (server_4 and server_5)  to NS960 and migrate some filesystems' mountpoint from server_2 to server_4.

below is my procedure  after the new DM hardware is OK：

1. set standby and NTP

server_standby server_4 -create mover=server_3 ;server_standby server_5 -create mover=server_3

2. Enable I18N on new DM

3. use server_param to change the  parameter on new DM, the same with server_2

4. server_export server_2 -unexport -name  fs3  -option netbios=cifsserver2

5 server_umount server_2 -p  fs3 /fs3

6. server_setup server_4 -Protocol cifs -option start

7. server_mountpoint server_4 -create fs3 /fs3 ; server_mount server_4 fs3 /fs3

8. delete the cifsserver2 and IP in server_2 ，create the same IP and  cifsserver2 in server_4 and joint to domain

9. server_export server_4 -Protocol cifs -name fs3 -option netbios=cifsserver2 /fs3/fs3

Any other special procedure need to notice ?  Many thanks!