I found some guides, like this: https://docs.substrate.io/reference/how-to-guides/parachains/convert-a-solo-chain/ that help you to convert a solo chain to parachain. However, I would like to know if it is possible to leave a relay chain and migrate this parachain to a solo chain and keep its data and state.
The reason behind that is that I don't want to depend on any relay chain for a long time. So, if one day in the future I decided to leave some relay chain I would like to be able to build and finish my own blocks until the moment that I decide to connect again to a new relay chain.
So, do I have to create a new solo chain and migrate the data and state from my Parachain to the new solo chain, or is there a better way to do this?