Here’s how I sorted out my 2020 aircraft to appear correctly in 2024 in the Aircraft Selection menu, following the Aircraft->Variant->Livery hierarchy. Note that the attributes shown are not all inclusive to what’s needed in the aircraft.cfg, but seem to be the main (key) drivers:
Aircraft
Key Attributes:
icao_model=“Your Aircraft model here” <-Keep this common for all your Variants if you want them all collected under one aircraft listing
ui_createdby='Your Creator name here" <-Keep this common for all your FLTSIM.X entries for all Variants if you want them all collected under one aircraft listing
Variant
Key Attributes:
ui_type=“Your unique Variant name here” <–Keep this common for all your FLTSIM.X entries and unique for each Variant
Livery
Key Attributes:
ui_variation=“Your Livery name here” <–Keep this common for all your FLTSIM.X entries and unique for each Variant
Please feel free to comment if there’s anything I missed.