When the call hits NuPoint it will remember the original extension dialed and hit that mailbox. The workaround is to run the call through a NameTag hunt group, then when the call hits NuPoint it will look for the NameTag hunt group DN instead of the originally dialed extension. So if you want all of the calls that hit the 2nd group to go to the same mailbox, overflow the group to the NameTag hunt group, put an always reroute on the NameTag gorup DN to voice mail, then either assign the NameTag DN as your mailbox number or as an alternate extension.