Change to new theme and revert if needed

I am pretty new here. I am using Edition but would like to experiment with a different theme. I have not injected code. I have made some cosmetic changes within the editor and the other panels. Will I lose those changes if move to a different theme and then decide to go back to Edition?
Thanks for considering the newbie question.

You may switch between themes without affecting content.

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Thank you. I also received a reply from support, indicating that formatting will be unaffected.