I’m pretty sure you’re aware 2020 liveries don’t work on 2024 planes? You might as well throw all of those out.
To answer your question, all the Standard, Deluxe, and Premium planes have been upgraded to 2024. So enabling any of those 2020 versions will turn off their 2024 counterpart.
As far as I know, only the ATR of the Aviator upgrade planes has been upgraded to 2024. The rest are still 2020 compatible planes, and their 2020 liveries should work. If they don’t, well, then that’s a sign it’s been upgraded to 2024.
You’re not seeing 3 307’s, you’re seeing all the licenses you’ve purchased and what they contain. When you bought Aviator, as you know, you also bought the Standard, Deluxe, and Premium licenses. And for some reason, Asobo chose to show all the planes from the Aviator upgrade in the Standard, Deluxe, and Premium lists. Please don’t ask me why. I don’t know what goes through their heads when they develop this stuff sometimes (SMH). So don’t open up all three, just one of them will suffice.
So, go ahead and enable all the aircraft that are not from the Standard, Deluxe and Premium packages. You only have to choose one source, I’m sure you saw when you enabled the 307, all 3 became enabled when you enabled one of them.
You can use the marketing image as a guide to figure out what’s what…
