I have just made some animation on object (applied some Rot, Scale, Transform keys on different frames so object is performing motion) and suddenly it is understood that object must have some other proportions (a little bit more). The question is: how to change geometry of such an object without affecting (remove, change or other actions) all animation keys?
One trick you can use is to parent it to an Empty object. Any transformation to an object will affect any other object parented to it, compounding their own transformation without needing to change any single keyframe. And an Empty is the simplest to setup as the parent, for such purpose.