At the moment (unless I'm missing something) it's a right palaver if you want to move the contents of a cropped viewport, whilst keeping the viewport in the same place on the sheet.   Typical scenario: you have a zoomed-in detail of a floor/wall junction. A change to the design means the floor changes to a lower level, but the detail of the junction remains the same. Lowering the floor in the model means that the relevant junction now sits outside of the viewport crop (and is not in li