Need to Update the Transaction type for the Invoices created using FBDI

Hi,

We have created 1000+ AR Transactions using FBDI, During the creation we have given Invoice and Credit Memo in the Transaction type columns. But the transaction types needs to be Sundry Invoice instead of Invoice and Sundry CM instead of Credit Memo. I assume this cannot done using FBDI. But s there any way to update this on Mass using any SQL or other way rather than taking up Manual approach as this will take some time.

Regards

George Simon