[SOLVED] Hardware replacement

What?
Items, Things, Chanel links etc created via PaperUI are stored in openhab_userdata/jsondb/
What scripts are you referring to? Could you maybe try to describe what you are looking for?

Theoretically, yes.
Be aware that change of IP might cause a slight inconvenience.
See first linked topic, comment.

I am not 100% sure about that one since I don’t use the cloud service. But since it’s restored backup I don’t think a new generated key is necessary.