You can edit and now audit trail your vouchers.
You need to find your voucher that you would like to edit first and the use "Edit Vocuher" and "Edit Internal Voucher Data".
Fill out with the new description you want to use.
You can select more than one line and "Bulk Edit" as well.
You will be able to also inquire the changes from the Inquiries.
GL-> Periodıc Tasks -> Audit Trail for Voucher Edit