Looking ahead to a new year, and wondering-
(ZCS OS )
A user has many thousands of email in "Sent"...Would it be better to make him a new Sent folder to hold "2007" history, or leave this year's messages in the main Sent folder?

He has already put 7.000 Sent msgs from year 2006 into a 2006 folder...
Would it be better to move these back into current folder?
If so, how best to move these back (not 100 at a time...)?