Thanks for your reply merlock.
Yes, I know this shouldn’t be the way to do things and I’ll be more thoughtful before copying commands in the future.
That’s what I feared but as you said, probably my best bet.
Thanks for the hint. I will look into backup stratgies.
Since you said
does that mean you actually know what I have done there? Would you mind to explain to me what I damaged in the process or what went wrong?
Thanks again for your opinion and help!