[otrs] new owner don't get the email notification

[does really nobody have any hints on this issue?] hi, we have the problem that, when e.g. owner A of ticket# 2000 transmits the ownership of his ticket# 2000 to owner B, then the new owner never gets the email notification if the customer replies on that ticket... instead of that, the email notification is still sent to the original owner, the first one who owned the ticket. is this a configuration issue or what exactly is the thought behind this behaviour? thanks. regards, patrick.