Hello Jain,
I think you can try changing the cost center in postion indicator of that financial deal..
Go to ftr_edit and select company code and Transaction and then click on change mode..
Then Go to environment icon and from there select positon indicator..
A new screen " Change Position Indicator" shall display and there you change the cost center manually..
If deals were already posted, then reverse the posting first and then change the cost center as mentioned above.
Regards,
Abhishek