Hi Prasad,
Yes what a sad case.
Point out the merits and reasons for the move being required for the benefits of all members.
What jurisdiction/ location is he in?
Then, as above, before the transfer is due to be made- terminate his membership (like the moderated/ banned list first)- I'm unsure how? GIO deals with these on import (IIRC they do not pick up any 'bouncing email addresses').
You can then archive any material that is not email text belonging to that person. And delete originals before transfer. As stated above, delete all posts/ email/ replies he might have made form the new group. Too bad if that destroys integrity, but you could point that out (before terminating) if he was a serious 'contributor'.
Personally, I have no use for such people in shared-open-network voluntary access public arenas.
Regards
davew
