How do I apply a spline IK constraint to an armature? There doen’t seem to be an apply button. I am assuming it is possible to apply the constraint…

Say I want to make an animation of a rope unfolding. The rope is attached to an armature. There are two curves: curve 1 represents the rope folded up, and curve 2 represents the rope unfolded.

First I add a spline ik constraint to the armature so it follows curve 1. I then apply the constraint, and then add a keyframe for all the bones’ rotation. Then at frame 50, I add another splinke ik constraint, this time making the armature follow curve 2. I apply the constraint, and add another keyframe of the bones’ rotation. This would result in a smooth animation of the rope unfolding.