Restoring iMessages for a friend from my copy
A friend accidentally deleted their iMessages with me. I still have them, and would like to use my copy to restore the messages on their device — preferably straight in their iMessage app, as if they never deleted them in the first place.
Details: They have iPhone 12, and I do have one of the M1 Pro MacBooks. I have iCloud backup enabled. I trust them fully, so I'm open to whatever it takes that could help them (e.g. logging off my account on my devices and letting them log in).
Thanks a lot!