Hi Scott,
IAFs are not coded as separate transitions, not at Jeppesen nor in the FAA database. They are a sub-part of the coded transitions. The G1000 (possibly also other devices) interprets these IAFs as transitions, but that’s not the “standard” and again, not coded in the data—this is a feature from the Garmin device(s).
Here, from the charts, you see the JVL transition. The JOLNI IAF is embedded and, therefore, not coded as a separate transition.
Therefore, in our chart app, you see only the coded transitions, not the IAFs, as transitions.
I hope that helps. I forgot to answer this part, right?
Richard