Hi
If Transaction is less for particular BP you need reverse all the transaction and change the Control Account then post the correct entry.
If transaction is high and you plan to convert the Ledger Balance to Correct Control Account.
Try this way in test db.
Create one Dummy BP master and link the Correct control and pass the JE as follows
VTY001 DR
Dummy BP CR
Then Change the VTY001 to Correct Control Account and Again Pass the JE as below
VTY001 Cr
Dummy BP Dr.
Inactive the Dummy BP.
With Regards
Balaji Sampath