How to remove (cut, trim) invisible (hidden) objects from Corel PowerClip object?

Very often users hide large part of complex figure with many objects via Corel PowerClip feature, so in page stays visible only small part of this complex objects inside PowerClip.

But Corel keeps in file and memore the whole figure (that placed into PowerClip) with all objects, even if them hidden.

Is there any easy way to expand PowerClip object, for delete (trim) all hidden objects and parts of objects, like cutting via Corel Knife or Crop tool, and keep only visible part of objects?