Hi. I tried to change the code of a transaction that was already included in a previous GST return. I only wanted to change the code, did not change the amount, but for some reason the system said the amount had changed by 1 cent and now the GST was not correct and I should manually change that.... that sounded like way too much work, so I left it. But that is not good enough. If I do not change the amount, I should be able to change the codes without any problems. It happened twice ..... in half an hour.