Masato,
Can it be explained how this occurred. Did something change between the two?
I thought it was practice that the AMM essentially confirmed the proceedings on the Policy SIG - to avoid these kinds of events, especially at APRICOT meetings where support/non-support may not be able to make both events.
I find it extraordinarily a waste of time if all the effort of the Policy SIG is undone on an individual policy basis. The AMM should be confirming the whole Policy SIG event, not individual policies.. or you might as well not call for consensus during Policy SIG and just save time and do it once at the AMM, or the other way around.
I've seen this happen a number of times at combined Apricot events with a lot of other parties present. One might say that it would be wiser to propose policies only at the mid-year events.