I had already noticed that Yukon MDX did not require braces around a single member set. So the fragment SELECT [Sales Amount] ON COLUMNS now works fine. What I didn't know until a student pointed it out today is that the MDX in a WITH MEMBER clause no longer needs apostrophes around the expression. So you can say With Member [Measures].[Test] as Sum(Product) instead of ... as 'Sum(Product)'. One appreciates those little things that make ones life simpler.