A cleared sheet means " the previous contents of this sheet are deemed no longer for plotting". A moved sheet means the same but the contents are still parked elsewhere. Both give blank sheets within the plottable series. This has been raised b y others and it is noted that the sheets cannot be moved like GTVs can - or deleted. The issue arises when the job moves from the approval stage to the construction stage and a scattering of sheets become redundant.
Thisa is not such a big deal and I didn't think it would be a difficult fix.