Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. We recommend that you download and install the latest cumulative updates for SQL Server:
Collections and Explicit Hierarchies are deprecated in SQL Server 2016 MDS. The system stored procedure udpConvertCollectionAndConsolidatedMembersToLeaf converts explicit hierarchies to recursive derived hierarchies, and converts consolidated and collection members to leaf members.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Learn about the terminology that Microsoft uses to describe software updates.