WebI Report not picking up the latest month value

Dear Experts,

I have an issue in one of my Web Intelligence Report where I have a Month/Year Dimension. I have got data till Sep-2015 in the backend but in Web Intelligence Report, I could only see data till Aug-2015.

Also, there is a formula written in WebI Report on top of the date dimension to sort in the format of MM.YYYY.

FYI, The Report is built on top of SAP BEx query and there is a Universe on top of it. The BOE version is 3.1 SP2 which is used by my client.

Kindly Suggest.

Thanks.

Sumit