User notes are created even thought they have no content

[fontanka16]

Notes without content is legal according to the schema, but since the notes likely will have preset titles from mappings, we need a way to control what content-less notes are created and not.

So, in order to make content-less notes come over, add something, anything, into the value field in the content mapping, like so:

The migration report will tell you the number of notes were discarded due to lack of content: