@kepano That's pretty much exactly the point I was making in the previous post. There's no export, and there's no way to change your existing links to markdown flavour. Ain't it convenient that default link format leading user into this trap?
So the past links and attachments do need to be converted manually or via command line tools such as pandoc.
With such attitude might as well use .enex or even .xml given user needs to convert that afterwards