"PDF/Illustrator Import as Separate Layers" - NOT WORKING

What is this button for? It doesnt work!!
When “PDF/Illustrator Import as Separate Layers” in the Advance Preferences is selected it take all the body parts of my illustrator file (which is already layered) and puts them in a Drawing Substitution on ONE layer.

Please put out a NEW video on how to import illustrator files to layers in Harmony 12. Or if anybody knows how to fix this problem, please let me know.

Thank you

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