There are some more breaking changes that may break after/during upgrade, some of these I faced are:- Cannot create a SQL Job-Step with @flag=4 for CMDExe subsystem.- CASTing NULL to uniqueidentifier via a linked-server fails.- Temp-tables are created with negative object-id only, check link: http://sqlwithmanoj.wordpress.com/2012/11/19/sql-server-2012-temp-tables-are-created-with-negative-object-ids/
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