Hi,
You can import the data in Excle instead just opening the csv. It will offer you possiblitiy to sort and make selections. To do this open a blank Excel sheet, go to the tab data, choose csv and then load data. You will see the filter icons above each column.
I agree it would be easier to make the selection during your export, but this feature has not been added to v6 yet. Acyba has so much to recode, but eventually all v5 features will come to v6. For now I hope you can survive with Excel.