Toon Boom Harmony

Can some Help me on how to import illustrator file with both layers to toon boom harmony with the same layers as it is in adobe illustrator.
Also how can i do light shading in toon boom harmony 12

You can do it if you have access to Illustrator 10 and make a group for each
layer you want to be separate but don’t make any sub groups inside a group.
When Adobe went to CS versions they changed the Illustrator format and
decided to not make information public regarding this format.

Here is the tutorial on Light Shading:

Here is the link to the documentation: shading