ELNAnnotation not working with msg files

Recently, I started using a parser in its "native" way, that is filling archive and child_archives instead of creating raw files with .archive.json extension.

This was a mandatory solution when using HDF5Dataset quantity type.

The classes I use as m_def of these archives contain not only some HDF5Dataset quantity, but also some other quantity with ELN anntotations:

    value = Quantity(
        type=HDF5Dataset,
        unit='watt',
        shape=[],
    )

    c_parameter = Quantity(
        type=np.float64,
        description='The C parameter of Antoine equation. Temperature units.',
        a_eln=ELNAnnotation(
            component='NumberEditQuantity',
            defaultDisplayUnit='celsius',
        ),
        unit='kelvin',
    )

Whenever I fill an editable quantity and save again, the processing goes nuts because I believe all the ELN Annotations are implemented to work with raw files

Am I correct @mnakh?

@mscheidg could we support this in the msg package, too?

There are some subtleties like the RereferenceEditQuantity: should it create a raw file or a msg file and how to decide when one and when the other ?