Problem in Integration with PM

Dear Experts,

I have created one Statistical project with activites 0001 and 0002,also i have created one order in IW31, Here i have attached project activity say 0001.And i have scheduled those two activites in CJ20N only. Same dates Which are present in CJ20N are also implicated in IW31 and working fine. But my problem is whem im reschedule those activites in cj20n its not implicated in IW31.Can anybody helpout this issue...?

Thanks in Advance,

By

Suma