Lottie import is possible, as we had support for this in the old Rive. That said, that was intended as a bridge for users that have a lot of After Effects animations that would be painful to recreate from scratch. If you are creating new animations, we think you’ll have a better experience creating them directly in Rive. After Effects isn’t intended for realtime content. Files exported from After Effects are often complex (for realtime playback) and not as optimized as files created directly in Rive.
@Yuta Yudistira, your files should not be gone. You can still access all your old files at https://flare.rive.app. We also have some support for importing your old files in the new Rive, which you can read about here: https://help.rive.app/getting-started/faq-1/importing-rive-1-files
We realize it’s a transitional moment for users of the old system. We had to make some hard decisions when building the new version, like prioritizing different features from the old version. We believe these decisions make the new Rive a better product. We’re still in beta and working towards feature parity. If you bear with us, we think it’ll be worth it.