The bottom line here is the developers wont accept an estimation of the MV. We have had this in so many cases before the subject being reported was only done with estimates included and thus they were rejected based on that.
We will be changing the guidelines for historical reports to now reflect that only sources with a clear cut value of whatever is trying to be reported will be accepted. Since anything less will simply be rejected by the developers. So forwarding on guestimates and estimations is really irrelevant.