This is a subissue of #1799

Feature request

Is your feature request related to a problem? Please describe.
Until #1799 is resolved, users could copy a cmesh and think that the vertex connectivity is copied, but it isnt.

Describe the solution or feature you'd like
When a cmesh is copied and vertex connectivity is active, an error message should appear and stopping the copy process.

Describe alternatives you've considered
N/A

Estimated priority

"Priority: high" Should be solved as soon as possible

Additional context
Add any other context or screenshots about the feature request here.