I am sorry, I had no idea that you were so far along in developing this technology as to be able to make a backup copy of a person that persists while not 'operationalized' - or are you pulling this functional knowledge from thin air?
And a copy would no more be 'you' than your identical twin is 'you'.
Thank you, Dr. McCoy. McCoy may have angsted over the metaphysical question of whether the reconstituted material at the other end of the transporter beam was really "him"; but that didn't stop him from going along on the ride when the alternative was likely to be lethal.
McCoy did (and thought) whatever the scriptwriters wanted him to do.
Non-fictional characters however are not so easily mollified.
Let us imagine, for the sake of argument, that the transporter is supposed to record the position and motion of every particle in McCoys body; that information is then transmitted to another location - the surface of a nearby planet - and used to build an exact replica. Meanwhile, the 'Real McCoy' is disintegrated (and presumably the material recycled).
If the disintegration and recycling part fails, we now have two McCoys - one on the Enterprise, the other on the planet. Both believe that they are the Real McCoy - leading to many interesting issues; for the purpose of this discussion, the question is whether it was morally acceptable to try to disintegrate the original. Essentially the transporter has made an identical twin McCoy; and when working as designed, kills the McCoy that we started with; While this helps to resolve any argument about who gets to sleep with his wife on their return to Earth, it seems a little extreme.
Assuming that the transporter successfully disintegrates the Real McCoy, then he has done the exact opposite of achieving immortality. He is dead; and his twin lives.
Of course we can take a different view - if the pattern is the person - neatly avoiding dualism - then there are now two McCoys, and both are real. But in that case, your 'photograph' analogy breaks down. If the stored information is sufficient to model a person, then it is a person. Perhaps one 'Frozen' to be reanimated later, but a person nonetheless. Immortality in a 'Frozen' state is indestinguishable from death - unless and until the frozen image is 'operationalized'. If the universe retains the means to 'awaken' such images, then an indefinite life is possible - but there is no way to ensure that state of affairs, and every reason to expect it not to occur.
If the price of immortality is spending eternity 'asleep' as a 'non-operationalized' image, then it is too high - immortality that is indestinguishable from death is pointless.