[informatimago]

Some consequences of unintended cloning are explored in the movie "The 6th Day".

But if some "transportation" is required, it may be easier and cheaper to just send information, and to use the energy and matter found at the destination to build the copy.

Ethically, it may be preferable to keep the original copy, even if legally it is a problem. But ethics should prevail on legality.

Is Startrek civilization more legalist than ethic?

Otherwise, what we'd really want, is not teletransportation, but updating of space coordinates without using any transportation.