This option takes all the scores found in a selected column of the Scores worksheet, and copies them to the first empty column found in the Data worksheet.
There are at least a couple of reasons why users want to do this. First, users may want to export the Data worksheet for use in another application, such as, perhaps, SPSS. However, before doing so, they'd like some of the columns in the Scores worksheet to be appended to the Data worksheet.
At other times, users may want to delete the Scores worksheet, perhaps simply to save disk space. Before doing this they'll sometimes copy one or two of the Scores columns to the Data worksheet.