okh
Thank you for your tips and interest in helping.

I thought I had installed the Advanced Editing Plugin which gave me the Join Wall feature, which seems to confirm that the plugin is installed. However, I am not seeing a way to "move" a wall, duplicated or original, as you describe, as an option in the Modify Walls feature. What am I missing or not understanding?

Also, is there a way to confirm that a specific plugin is installed?

Thanks in advance,
Delain