MYOB Business has the option to be able to record any adjustment transactions in a 13th Period which is included in the Financial Year, but not in the normal reporting for the last period in a Financial Year within MYOB.
Currently Calxa does not support 13th Period reporting, and all transactions that are recorded as such will be included with the Last Month of Financial Year figures. For example, if your Financial Year ends in June, then the June transactions AND the 13th Period Transactions will be summed together and report in June.