Data is not displayed in Report after migration to Crystal Reports 2011

Recently, we have migrated successfully from crystal reprot 9( vs2003) to crystal report 2011(vs2010). (All the reports were degined with crytsal report 9).

After migrating, we are facing a peculiar problem in Crystal reports 2011. problem is mentioned below:-

Data is not displayed for a few upgraded crystal reports.

I research on that and found that reports are not refreshed with new data. Basically our report fethced records from its desire tables but its not able to fetched.

when we open then report with crystal report 2011 designer and execute over there (after mapped with respective table) correct data will displaying on deginer(data from the table is populating) . But once we save it and try to pulled same report from application, its not get refreshed (same old data will displaying, what we save in Crystal report 2011 designer) .

this peculiar problem happen only for some reports.

Please help me in this.