Set Vat Code to inactive

I would like to be able to set old VAT codes to inactive: reason is that old pre-Brexit EC vat codes are still being used by our sales team, which I then have to reverse and re-enter when it comes to the VAT return for the quarter to make sure the transactions appear in the correct place on the vat return report. I can't edit the vat code on these transactions as they are currency trans; I have to reverse and re enter these transactions in a prior period that has been locked.  I have set the customer defaults regarding the correct tax code, and advised the team not to use these codes, however they are still used in error on a percentage of transactions even over 2 years after Brexit. I would like the old codes that I specifty not to be able to be used unless I set them to be used for a specific reason (e.g. to enter a correction) so the facility to 'set vat code to inactive'