Thank for your reply.
I didn't send even one quote that day, only three invoices. Doesn't matter anymore, the support team managed to restore backup and reverse the old MYOB back to current financial year.
There is another problem though. I cancelled bank feeds to CBA and Amex in old MYOB, tried to reconnect in new MYOB but the CBA wouldn't let me, saying it's still connected to the old MYOB. After a few days I called MYOB technical support, they said they will look into the matter but as far as they can see the feeds are disconnected from their end. Fast forward to present day, I called CBA and after 45 minutes waiting and explanations whats the problem, they said they never received disconnection request from MYOB team, as they usually do, and that I shall call MYOB team again. It's beyond me that in 21st century digital era simple things like that gets complicated. Also, as per CBA support person, it takes 5 business days for that once they receive request from MYOB. What for? Does email travel 5 business days from MYOB to CBA?
Amex (the third disconnected feed) is even worst than CBA. When tried to reconnect feed from Amex it just shows error.
Is there any accounting software which works as it should work, without all this dramas?