NOTE: Integration tool for MYOB LIve only
Invoice number Look up checks imported Invoices number from ConnectWise and checks to see if they already exist in MYOB, if the Invoice number exists it will provide a error message and will not allow export.
Under the configuration screen, Export Settings, Transactions.
Tick the invoice look up check box.
You can stop previously exported Invoices by following these instructionshttp://support.innoventsoftware.com.au/a/solutions/articles/225790-how-can-i-mark-transactions-as-exported-in-connectwise-to-avoid-posting-them-to-myob