I don't think MMR is needed to equipped with all scout and attack helo. Even USAF apache with a few carries MMR. They work in team with network.I slowly get the feeling that this MMR is not yet in full service and is still being in evaluation within the 71st LH-Brigade since you only see these two Z-19A with different radars.
I saw the tweets. I think having mast mounted radars is of low priority to them. So they chose to test those radars made by different competitors longer than most people would have thought.I agree, but my point is that we only see these two helicopters equipped with them and both have a different radar dome.