If you entered the transporter under the false impression that it was going to send the actual you to a far away place,
Then the the machine ended you life.
Then far away another machine created a brand new person who was under the false impression that they were you ....
... yes that
would be murder.
On the other hand, if the machine sent you, every last aspect of the actual you, to the far away place ... no, that
would not be murder.
If the the transporter were nothing more then some kind of biological fax machine, I would not go into it even if I were bleeding to death and it was connected to a hospital.