The original post has a limit of character in the message, so I have a few more customer examples we have found below:
** The initial one we realised was Customer A- original invoice $342.32 from Jan 2026 - when we went to do payment in October 2026 it showed $311.20. It seems like the invoice took out the GST amount from the items, and recalculated the invoice total with a new GST. We have set all our products to be GST Exclusive pricing. All the aged receiveable report we've generated since Jan 26 shows the correct amount of $342.32, and only the aged receivables generated in october has the new $311.20.
** Customer D - we raised an order for this customer for a product & freight fee of $12.50 ex GST on the 8/10/26. We then had to revise the ship to address as the customer changed their address and saved the order.
However, MYOB has now raised an invoice for that shiping fee + GST only with no item in the invoice. We haven't converted the order to invoice as stock hasn't arrived yet and we are unable to supply. The order still have the freight charge.
