Hi Andrea, the in/out points in mocha should be created in the Layer Properties panel and NOT directly in mocha’s Timeline, which creates in/out for the clip but NOT the shape.
Secondly, the mocha Shape keyfames (KFs)in AE look like they’ve been deleted. Did you delete the KFs. If you did, pay attention the mocha Shape’s Opacity property which is the property that is used to switch off the shape (or to create an out point in your case), to conform the the in/out that you specified in mocha’s Layer Properties Panel.
Do not confuse between an AE layer’s Transform>Opacity property and the Opacity property found in the mocha Shape effect.
If the mocha Shape Opacity property does not have a keyframe with a value of 0, you can manually create it yourself. Simply set the KF value to 0 at the point where you want your out point. Then select all the subsequent keyframes for the Opacity property and delete those keyframes.
HTH
RoRK
Intensive mocha & AE Training in Singapore and Other Dangerous Locations
Imagineer Systems (mocha) Certified Instructor
& Adobe After Effects CS6 ACE/ACI