My wife had the same problem with 2 separate SK flights (only on the outbound, inbound credited normal) and we finally gave up and credited them to Eurobonus.

With that being said, our AV flights never got credited after 6 months of contacting them. M&M now says they can't credit the flights as the 6 month window has expired, despite a comedy of errors on their part. I have given up with M&M and we made the decision to empty out our M&M accounts and are switching to Eurobonus. *G for 50,000 sounds much better than SEN for 100,000 (which we would never have gotten).