What do you mean by updated tax?
You can NOT change a tax rate and make it display on the invoice. That would be a great error. Imagine tour country goe from 16% to 18% (happened here at spain) the vat type is the sane however all invoices earlier to the data should jeep 16% and all new invoices shoul appply 18%. if everything invoice wad updated we would hace finacial errors.