I have not been able to find the answer to my query on the Message Boards.
Tools>Options allows allows for a default directory to be set up for new tree files.
File>Backup allows for backup to a Working Directory, or Custom Directory, etc - including media files.
However, after attempting to backup to a Custom directory for a renamed tree, it seems media files are always sent to the Working Directory, whereas my preference is for media files to be kept with the Custom Directory.
I cannot find how to do this despite trying to specify the Custom Directory in both Tools>Options and File>Backup.
Can anyone please help with this?