Class name change when copying block

Thank you very much for the - once again - detailed explanation @Louis.

I was referring to the following post and indeed, I actually meant copying blocks to other sites (in general which also contain pages of course), I’ll try to make things more clear in the future. Sorry for that.

That was actually my intended topic.
For the same site I can see the way it works, this behaviour is crucial - so everything is fine.
Copying to other sites is not so convenient to be honest.
Since the copy/paste process improved even more in Cwicly, this is a thing which doesn’t fit in the otherwise smooth and seamless experience.