Proper exporting of hierarchies

This structure:

Folder A
  Document B
    Rem C
Document D
  Reference to A
  Reference to B
  Reference to C

Exports as:

A.md
D.md
A/B.md 

With:

A.md:
- B
  - C

B.md:
- C

D.md:
- [A](A.md)
- [B](A/B.md)
- [C](A/B/C.md)

There are wrong things here:

1. The contents of A.md duplicates the folder structure, instead of linking to it. B and C appear twice in the export (B as content and as file, C twice as content).

2. A/B/C.md makes no sense, C.md doesn’t even exist.

I understand these are non standard features, but current output is redundant, incoherent and difficult to process.