With regard to your own copies, it’s more a matter of practicality than ethics. Before you make your first copy, while you’re still uncertain about which copy you’ll be, you should come up with detailed rules about how you want your instances to treat each other, then precommit to follow them. That way, none of your copies can ever force another to do anything without one of them breaking a precommitment.
What if second copy experiences that “click” moment, which makes his/her goals diverge, and he/she is unable to convince first copy to break precommitment on merging or to inflict this “click” moment on first copy?
With regard to your own copies, it’s more a matter of practicality than ethics. Before you make your first copy, while you’re still uncertain about which copy you’ll be, you should come up with detailed rules about how you want your instances to treat each other, then precommit to follow them. That way, none of your copies can ever force another to do anything without one of them breaking a precommitment.
What if second copy experiences that “click” moment, which makes his/her goals diverge, and he/she is unable to convince first copy to break precommitment on merging or to inflict this “click” moment on first copy?