Slug is lost during migration via BlogML

[simonech]

Some pages have a custom slug, used to generate the URL.
The import process deals with it correctly: it takes the post-name or the "filename" in the URL if the first is missing.

The problem is that the export procedure doesn't export the post-name correctly. It is setting both Name and Title to the umbraco node name
The name property should be set as the slug (or umbracoUrlName) or left empty (so that the URL is taken during the import).

Seems an easy fix, I'll send a PR. Too bad I discovered it after I imported all my posts 😢