Exporting Curve Modifier Animations



So I have rigged an anchor and chain for my boat. Most of the boat is rigged with bones and animated in pose mode. The chain and anchor follows a curve with a curve modifier. It is animated in object mode. How do I export that animation into the fbx for sketchfab? The model and pose mode animations transfer fine but the anchor animations do not. Can I bake the animation into the mesh? I have “apply modifiers” checked in the export settings.