aviation_nerd

Hey folks, just had a quick question. I'm fixing to add the A350 aircraft to my fleet shortly and just had a quick question about that before I purchase, as well as the A300-600. Regarding the A350 first, I noticed on the website in the red print it shows it's a "premium" is that the version for Inibuilds for the 2024 features of walking around the plane and so on? and for the upgrade fee for the A300-600, If I pay that upgrade fee when I have it installed in 2020 already, will that automatically transfer to 2024 for when I eventually begin adding 3rd party aircraft to the 2024 version?