How to set folder location? (NOT profile location!)

Hi Folks,

Each folder shows a location under it’s ‘properties’ dialogue, eg:
mailbox:///home/somewhere/.thunderbird/somesalt/Mail/Local Folders/Maildir/

However, this information is read-only. I can’t set that folder’s location to a different location. What I want to do is set the above ‘Maildir’ folder location to the default Maildir location at ~/Maildir

I’ve checked under advanced config and I’ve checked the relevant .msf file, but don’t see the location referenced.

Where is folder location variable kept and can I make it point to the Maildir default location - that is ~/Maildir ?