Period Prompt values showing 3 months in the past, ex: shows apr when july entered

Hi all,

I have an analysis workbook which used to run fine before the BW object migration that happened last week. I see the period values going 3 months backward and user complained the issue.

I have checked the BW RSRT query and even created a webi test report and everything seem okay but why analysis wb gives this error

Kindly provide any inputs,

Kris