As I understand it, if you want to upgrade in place, then the moment you do your first server upgrade, which upgrades the SQL db, then you cannot use the 4.1 BES Manager. This sounds scary in a large environment like mine, between the admin training involved for the new BAS web interface as well as the newness of 5.0.

So the other option is to setup a completely new BES 5.0 Domain w/ a new SQL DB. In this case use the Transporter to move the accounts.

What is the thinking among those with large environments? In place upgrade or transport to pristine environment?