Cube Partition and process when we have frequently changing fact

Hi All,We have a fact table where we update the fact two to three times once based on record creation, once for completion and then in between for cancellation. So when we pick the record the record created say in April 28 and this belongs to the April partition. We may get an update in May some time for the same record and we do these changes and will be part of may partition of the cube. how we can manage to avoid duplicate count of records in both partitions and get the correct count. We are using sql 2012ThanksNaga