There is no requirement to select a particular purchases / expense account, if you do not choose a particular purchase / expense account then all purchase entries for the period will be reported.
To view the purchases transactions for a particular purchase / expense account simply choose the desired purchase / expense account from the drop down list of nominal accounts.
The report returns the purchase entries in the sequence entered, from which you will see the very last entry entered.
It may be preferable to "Sort by Date" to view the purchases in date order.
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