Thunderbird Mail Folder Structure?

I am running "Shredder", the 64 bit version of Thunderbird beta on Windows 7 64 bit. So, maybe there is not an answer to my question. However, the profile structure probably hasn't changed that much.

So, the question is this:

In the foler view, it is laid out with the name of my POP3 account at the very top, in my case: Below that are the resevered folders, Inbox, Drafts, Templates, Sent, Junk, and Trash.

The next item in the structure is "Local Folders" with "Trash" again, next "Outbox" then followed by all my personal folders.

Why are Trash and Outbox under "Local Folders"? Shouldn't they be under the first structure of my POP3 name with Inbox, drafts, etc. with the rest of these reserved folders?

I have search the profile looking for two occurance os Trash and only see the one under the POP3 name. I cannot find one called Outbox. where in the heck is it located?

When the junk filter rules are run, and junk is found, Thunderbird issues a message that it cannot find the junk folder.

The reason I am concerned about this is the above sceanario looks screwy, and I may have corrupted my file structure when I copied this sturcutre from my Windows XP Pro Thunderbird account as Thunderbird has NO provisions for going from one Thunderbird client to another. You have to fiddle with coping files in the profile folder. Then, Windows 7 couldn't leave things as they were, forcing us to learn a new file layout, i.e., Users\<name>\AppData\Roaming\Thunderbird. At least Outlook has a wizzard to import/export to a store folder when you need to move from one machine to another.

Is there a way to manually rebuild the folder structure without loosing all my mail?
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I would do this.

Create a new thunderbird profile, setup all mail accounts, don't download email (i.e. don't use valid passwords)
For details see:

Then copy all mail files like inbox from your old account into the new overwriting all empty files,

This is my gmail pop folder

To backup thunderbird you should always use mozbackup.
msf files are index files and can be deleted.
RayRiderAuthor Commented:
I still don't know why I have another "trash" and "outbox" under my "local folders".

Since this is a 64bit beta and seems to work without any other apparent problems, I am going to ignore it and worry about it when the full release is given.
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