Disable tax exemption reason code

Hello All,

We want to disable or to let to be grayed out reason code 5 = "diplomat" when tax exemption is done.

We will like to have access to transactions history for customers where tax exemption was applied.

We have done the update into COM_REASON_CODE table to HIDDEN_FLAG column set to 1 for the above reason code 5 (xstore db and Xcenter db).

During the test let say code reason 5 = "diplomat" was hidden and not available to be used, but sale transaction with tax exemption was completed with a different reason code available to be applied but not in customer's profile.