I've just copied FS traffic and another vendors traffic folder from my FS2020 community folder into my FS2024 community folder. Beyond ATC works fine with them.

@ppmd I had already tried this but even with the blacksquare in my community folder I dont see it. It comes up with the kenmore livery and then i get only a frame when I am in the outside view. If I choose the default I do get the glasscockpit. So I have no idea what is the problem. I only have moved my community folder to the drive where msfs2024 is installed so noit the default. But all mods that are in that folder are working fine.
I have no idea why it is not working with me, but thanks for your reply.

@qwz020 We hope so yes, we've not had sight or use of the SDK as yet so we're unable to guarantee 100% that will be the case, but we're hoping that's the case.