You will also need to ensure that the Account Codes used in Vto are Identical to those in MYOB, If not simply add the account code into MYOB and make sure you set the TAX field as follows;
The Income Account 4-xxxx Domestic Comm should be set to GST
The Income Account 4-xxxx Intl Comm should be set to FRE
The Client Travel Account 1-xxxx Should be set to N-T
The Undeposited Funds Account 1-xxxx should be set to N-T
The Vto Control Account 2-xxxx should be set to N-T