Add an extra week

[terry_stjean]

We have a date dimension defined as Year begins 20030526, Week begins on Monday, Add an extra week 6 days or more, Lunar Year.
The dimension is defined as Year, Quarter, Month.
Our 2015 Fiscal year is from 20140526 to 20150524. I now have to add a 53 week to the 12th period.
When I change the 2015 fiscal year source value to 20140526 to 20150530, any data in the 53rd week doesn't show under period 12 of 2015.
Instead it shows under period 1 of 2016.
hat am I missing?