You have a Master Data Services (MDS) model that contains a large amount of data (such as millions of records) in Microsoft SQL Server 2014. When you run the MDS stored procedure [mdm].[udpVersionCopy] to make a version copy of the model, slow performance of the stored procedure may cause the procedure to run for hours.
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 3073108 - Last Review: 22 Jun 2015 - Revision: 1