Time utility shell dimension across multiple date dimensions

Question

Hello,
I have built a time utility shell dimension based on a solution from Tomislav Piasevoli (book: MDX with SSAS 2012 cookbook) however I have modified it slightly
In his example he uses two hierarchies from the same dimension. However I have modified it to use two different date dimensions, 1 hierarchy from each of the dimensions. The hierarchies must be able to be filtered by one another or combined
in the same query. The problem I’m having is my solution does not work for
distinct count measures. It works for every other type of measure…sum, count of rows etc etc. The filtering works perfectly when one hierarchy is filtered by the other, it’s just the distinct count that won’t show the parallel period.
I have created the shell dimension the typical way. Creating a named query like below. Creating the dimension with the default value etc etc
SELECT       
0 AS ID, 'As is' AS Name
UNION ALL
SELECT       
1 AS ID, 'Year ago' AS Name
Below is the original MDX and my modified MDX. If anyone can help that would be great!
--original mdx for one date dimensions.. the below works perfectly for all measures including distinct counts
SCOPE( [Time Calcs].[Calc].[Year ago]);
SCOPE([Date].[Date].MEMBERS,
[Date].[Calendar Year].[Calendar Year].MEMBERS
This = (ParallelPeriod([Date].[Calendar].[Calendar Year],1,[Date].[Calendar].CurrentMember),
ParallelPeriod([Date].[Calendar Weeks].[Calendar Year],1,[Date].[Calendar Weeks].CurrentMember),
[Time Calcs].[Calc].&[0]
End
Scope;
End
Scope;
--my modifed mdx for multiple date dimensions.. the below works perfectly for all measures
except distinct counts
SCOPE( [Time Calcs].[Calc].[Year ago]);
SCOPE([Date].[Date].MEMBERS,
[Date].[Calendar Year].[Calendar Year].MEMBERS
[Delivery Date].[Date].MEMBERS,
[Delivery Date].[Calendar Year].[Calendar Year].MEMBERS
This = (ParallelPeriod([Date].[Calendar].[Calendar Year],1,[Date].[Calendar].CurrentMember),
ParallelPeriod([Delivery Date].[Calendar Weeks].[Calendar Year],1,[Delivery Date].[Calendar Weeks].CurrentMember),
[Time Calcs].[Calc].&[0]
End
Scope;
End
Scope;

Answer 1

Hi Toro07,
Thank you for your question. 
I am trying to involve someone more familiar with this topic for a further look at this issue. Sometime delay might be expected from the job transferring. Your patience is greatly appreciated. 
Thank you for your understanding and support.
Regards,
Charlie Liao
TechNet Community Support