In case you are using Navigraph Navdata in MSFS2024, ALL your add-ons in your community folder need an appropriate "package_order_hint" entry in the manifest.json. See corresponding threads in the Navigraph Forum. Symptoms are missing SIDs, STARs or ILS is not working, in particular if a scenery add-on misses this entry. I have added this entry to all my add-ons, and since then it works perfect.