I dont think the Fm9/G should be described as III13. I have encountered this before but I don’t know if I reported it.
SC3.07 Standalone / M2 Studio / Sonoma 14.7.4
Hard to tell what is going on there but in Dorian that should be a Abmaj13/G hence the III. I’m more interested in why it’s showing as a note out of scale. If you change the Scale to F Minor it will prolly make more sense in your example.
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