If Credit card claims are imported to wrong scheme then please see the following:
If the transactions have not been Submitted to users then the import can be deleted.
If the transactions have been Submitted to users, but none have been submitted for approval by the users then the import can be reset and then deleted.
If users have submitted the claims but none have been approved, then you could reject the claims, delete them, and then reset the import to allow it to be deleted.
If submitted claims have been approved then the issue will need to be addressed in the target accounts software to ensure that the ledger transactions update the correct supplier or nominal accounts.