SSRS Reports/Database Issues after Importing data

Hi 

My SSRS Reports were working perfectly in my live, but when I had backup my data and import  to another organization in another domain my SSRS Reports not showing any data,and when I checked with same query in the SQL ,there is no values after executing query, but when am executing the same  query in my pervious environment its fetching value??

My I Know the reason for this issue?? Help Required ..

Thanks in advance!!!