Cannot move subfolder in Apple Mail

Nietzwaar wrote:

I cannot move my folder to the root level of Apple Mail.

Can you help me?

?

What is root level of Apple mail...(?)

You have your accounts in "Favorite" section

You have your custom mailboxes in the "On My Mac" section...

Is this an old issue, new issue, what changed? Maybe you can say more about the specifics

ref

Mail User Guide for Mac - Apple Support