Is It Possible To Be Plugged Into Multiple Matrices!?

This is a very good question, and yes it indeed is very possible in fact, however what will often be the case is that if you have the presence on various Matrices, your consciousness or active awareness will only exist on one of them.

You can actually even be "eliminated" from one Matrix and inserted into another one, where only one modification to things have been made, or your memories have been adjusted or removed even in the same lifetime, but you would otherwise not be aware of it.

All your possessions, lifestyles and everything in your life will all still exist and typically remain the same, but there could be one or two modifications, and this might be someone who suddenly treats you "differently" or some bizarre change.

Often times, it can even be a family member of yours that is even replaced with a clone, and you might not even know otherwise.

The thing is not all Humans that you see, despite the fact that they are being projected into our existence, are within your same timeline or Matrix position, and this is also why you might find that you either seem to be treated or regarded like a "ghost" or find very strange Phenomenon with other Human beings, but particularly with NPC's.

This is why you might have endured experiences where sometimes you may be talking to someone or in a conversation, and the conversation does not synchronize or something feels off in the processing.

The design of this type of arrangement is to actually confuse and distort you in life, if it has happened to you, and to wipe your memory about certain series of events in your life, usually bad ones, and re-inserting you into another version of the matrix occurring simultaneously, but without you dying and reincarnating.

I am trying to think of a better way I could describe this, but it's very difficult for me, so I hope it makes sense.

But you have to remember that your existence here, even while you may feel or perceive the world with your senses in a physical container, your body, that your actual source energy comes from many light years away somewhere else, outside of this locked universe.

Both Demons and Pure Humans do reincarnate, but NPC's do not.