ImportExportTools NG does not work recursively

[SeymourKnecht]

To whom it may concern,
I recently decided to recreate my MS Windows 11, Office 365: Outlook mail provider on a New Ubuntu PC.
I used Advik to save the Outlook “.pst” file as a hierarchy of MBOX folders and sub-folders: using a USB stick, I copied these file to the hard disk on my Ubuntu PC.
Below, I have included a part of the initial hierarchy:
.
├── 5D
│   └── 5D.mbox
├── AA
│   └── AA.mbox
├── Amazon
│   ├── Amazon.mbox
│   └── Det
│   └── Det.mbox
├── AndroidDeveloperStudio
│   └── AndroidDeveloperStudio.mbox
├── Apple
│   ├── AppleDeveloperStore
│   │   └── AppleDeveloperStore.mbox
│   ├── Apple.mbox
│   ├── ApplePay
│   │   └── ApplePay.mbox
│   ├── AppleSupport
│   │   └── AppleSupport.mbox
│   └── Det
│   └── Det.mbox
├── Avast
│   ├── Avast.mbox
│   └── Det
│   └── Det.mbox
├── AVG
│   ├── AVG.mbox
│   └── Det
│   └── Det.mbox
├── Azureus
│   └── Azureus.mbox
├── BabbleGerman
│   └── Dets
│   └── Dets.mbox

I Installed Thunder bird on the Ubuntu PC , and set up a local folder named “EBuy”. Next, I installed the extension “ImportExportTools NG”: you will see from the screen capture below that one of the options is “All mbox files from directory (with sbd structure)”. I interpreted this to mean that I could point at the root directory of the the above tree and the Thunderbird software would perform a recursive directory walk, copying the messages to the appropriately name folders in the Thunderbird local folder, “EBuy”.

Sadly, I discovered that I needed to copy the MBOX files one at a time into the Ebuy structure.

It seems to mean that it would be a straightforward task to add this functionality to the extension software.
If present, this would enable existing MS Outlook users to transfer to Thunderbird much more easily, increasing the take-up of your product.