Should a separate window appear after I go to File>Mail Folders?
Only if you are running in List mode and the Folder window is closed. The option does not do anything if you are running in Preview mode and have the pane window open (it will open it if it isn't open)
It sounds like you are running in Preview mode and that you might be trying to change a Tray into a conventional folder. Look at its icon in the folder list. If it looks like a yellow open folder then it is a Tray. A Tray is a specialized folder that can contain other folders and Trays but not messages. It is virtual. It does not physically exists. It can not be opened in its own window. It does not have any properties. Its structure is stored in the HIERARCH.PM file. If you ever lost HIERARCH.PM you would loose all Tray structure.
If it is indeed a Tray, and you don't need it any more, you can move the folders that are in it and then delete it. Any child Trays will need to be dealt with in the same manner. Remember, a Tray can not contain message.
[quote="pid:55932, uid:26261"]Should a separate window appear after I go to File>Mail Folders?[/quote]
Only if you are running in List mode and the Folder window is closed. The option does not do anything if you are running in Preview mode and have the pane window open (it will open it if it isn't open)
It sounds like you are running in Preview mode and that you might be trying to change a Tray into a conventional folder. Look at its icon in the folder list. If it looks like a yellow open folder then it is a Tray. A Tray is a specialized folder that can contain other folders and Trays but not messages. It is virtual. It does not physically exists. It can not be opened in its own window. It does not have any properties. Its structure is stored in the HIERARCH.PM file. If you ever lost HIERARCH.PM you would loose all Tray structure.
If it is indeed a Tray, and you don't need it any more, you can move the folders that are in it and then delete it. Any child Trays will need to be dealt with in the same manner. Remember, a Tray can not contain message.