Mail account missing for Archiving

When I go to settings for my automatic archiving, I noticed that one of my 3 mail boxes says “None” for the column “Archived Folders”. I cannot get it to list “All Mail Folders” like the other two mailboxes that I have. How can I resolve this, or maybe it’s fine as is?

Click on word None and choose All Mail Folders.

I tried that about 10 times but couldn’t get the “None” to menu. Messed with it a while, closed/restarted, etc. It finally worked! “There are more things in heaven and earth, Horatio, Than are dreamt of in your philosophy.” Hamlet

Thanks, Charlie!