Symptoms
When you process a partition in Microsoft SQL Server 2016 Analysis Services (SSAS 2016), any other partitions that are marked as incomplete are truncated.
Resolution
This issue is fixed in the following cumulative updates for SQL Server:
Cumulative Update 1 for SQL Server 2016 Service Pack 1 (SP1)
Cumulative Update 4 for SQL Server 2016
About the cumulative update
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server:
Latest cumulative update for SQL Server 2016
Status
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
References
Learn about the terminology that Microsoft uses to describe software updates.