So... if you use this ability and discard the attached astromech, you loose the ability the astromech gives as well. Right?

R2-D6 - the EPT is discarded as well?

Yes, you loose the astromech's ability.

However, we just had an email ruling from one of the designers saying that an equipped EPT would not fall off even if the ship lost the EPT slot do to a discarded 'mech. So apparently the EPT stays.

Cool. Thank you .