yes. this is amazing. all the lives are happening simultaneously. And there are infinite paralell realities. with infinite versions of you. each slightly different or majorly different. We also shift in each moment to different paralell reality only that we recreate the sameness constantly in each moment to maintain an illusion of continuity. But in your case you glimpsing paralell realities with major differences , its probably a way of giving your self clue to the nature of existence. you are waking yourself up from the illusion of continuity. This is why even the so called pastlifes are not actually in the past , they are simultaneous. all the probable , past , present , future lives are simultaneous along with paralell lives. its the nature of quantum consciousness. And you know , this means , its not only that you can change the so called 'future' as choosing a different probable reality but also change the probable past. this where mandela effect comes into the picture, the genuine examples where the past or the history has changed. This is why the past cannot make you a prisoner. You can change it in the NOW moment.
This is why i love to call a 'past life' = alternative life. And another thing too, because we all are in the NOW , we connect to alternative lives that are relevant to our NOW experience theme. What ever we are holding in our field as a thought , belief, resolved or unresolved emotion , vibration attracts or draws to itself similar reflections. And those reflections could be either in the physical or could be an alternative life time which may or may not be your own. or a parallel life time. An alternative life time can be happening in 1800s simultaneously while a parallel life can be happening in 2019 on slightly different version of earth with different history with the different you , it does not matter, you attract or remember whatever is relevant for your NOW experience. This is why its important to not overly identify with any one version of your experience and allow the flexibility of consciousness to show you what need for your fulfillment in this massive exploration and expansion of consciousness.
We as a speicies also have group consciousness and all the pain, gain , rollecoaster of emotions, life stories, wisdoms, expansions are stored in the group consciousness as well. So you see when you heal or resolve an emotion that shows up in the now moment , you are healing it also for the group. Your resolution or experience of resolution is stored in the group consciousness for others of the species to draw from. If i am connecting to a king or scientist or artist from the past , it does not neccesarily mean i am them , i am connecting to their field based on my vibration and can be drawing from the INFINITE NOW moment what i need for my fulfillment Same thing applies to traumas. This is why women when they have periods feel the collective female species pain, or this is why sometimes two scientists living in two different part of the world can discover the same thing at the same time without knowing each other. They are drawing the wisdom and experience of what they need in the NOW MOMENT from the infinite probable realities, paralell realities and group consciousness thats all are happening and available NOW.
This is why, when you in the NOW moment heal or resolve a feeling of betrayal and expand your knowing of trust, this directly energetically alters and benefits the so called ,
' past life you' who is getting their head chopped off in the so called '1500s' due to the betrayal of someone they trusted. if you fully heal it in,then you may even discover that you never had such a past life ! for past is also altered in the NOW. What actually happened here is since YOU fully healed your trauma you already moved to a parallel reality as a parallel YOU that never had such beheaded experience! you can ofcourse create an illusion of continuity by believing in a backstory . The miraculous healings of physical ailments are examples of this. You shift to a parallel reality where you dont have the disease or the ailment ,but you may still choose to create a back story as if you had it before , which is an illusion of continuity.
The photos of the so called 'past' are seen in the NOW. As i said before some genuine example of mandela effect phenomena shows the history altered. Thats all because we as collective consciousness have also shifted to a majorly different parallel reality . Mandela effect says , a large number of people remember alternative history about few major historic events. We are leaving ourselves proofs like these to know that illusion of continuity can be seen through. you are doing the same in you dreams. You are directly experiencing the flexibility of Consciousness and the nature of existence