Auto Rig Pro: IK-FK Switch moves bone to center?

When I move the FK/IK switch from to IK, my bone stops following the animation and sticks to the center. I’m unsure why it does this, what am I doing wrong?

Information to what I’d like to do: I’m cleaning mocap data. One of the mocap sensors died during the recording, so the leg misses animation. I’d like to activate IK when the sensor death happens, so I can fix the animation with more ease.

Any info is appreciated, and thank you!

FK:


IK:

fo anyone who’s looking for the answer: