Amazon settlements are paid every 1-2 weeks (generally) but often will cross a month boundary.
For example, one settlement may start on June 25th and run through to July 9th. If we create one invoice for this settlement, it will either need to be in June, or July and that will mean the entire period of sales and expenses will be recorded in a single month, when in fact, they relate to two months.
A2X will split the settlement data according to which month the sales or fee actually occurred. This will ensure that your financial accounts properly record the transactions in the month they occurred.
This will also make months more comparable to previous months and years for your reporting.