If the sole underlying reality is that in which or for which you appear then it is the same in respect of your ceasing to appear. Your life and your death and everything in between merely appearances or arisals in this sole condition for any sort of experienced reality. It is then a kind of pure distinction, and abstract power of choice or distinction. If you were to be reborn as another with no memory of your former life there would still be a sense in which it was you, different shadows playing on the same screen? But then why could this not be what is already in place in relation to every other person or sentience, the very same screen? You have pushed the background of consciousness so far back that it embraces every degree of difference. Yourself yesterday and yourself today and tomorrow appearing on the same timeless screen despite there being mo real commerce between them. This is absurd, but since it is the inevitable conclusion of your questions ought you to embrace this absurdity or reject the whole logic and start over again?