Dear Community,
we are using Confluence 7.10.1.
We use a space as a "template space", that means we copy this space again and again and then fill information into the newly created space.
Now we use draw.io for many graphics. We noticed yesterday that our draw.ios are broken when we copy. I investigated why this is: draw.io is attached as attachment to a page and is not copied automatically.
I tried to copy the space WITH attachment, but can't select that when copying (see screenshot).

Even my colleague as admin cannot select this for some spaces/pages. Is there any reason here?
Thank you and best regards!