I have to go into the Work File, check if new data is present in the Work File(three cases present for this example question), we grab the unique identifier cell values.
Secondly, with the help of the unique identifier in Work File, we lookup the match the data in Master File. If the unique identifier matches with cell values in the Master File, we have to simply replace/modify the whole row with the data present in the the Work File.
In this example, three cases are present in the Work File. These three cases are present in the Master File as well, so we need to copy whole row data from Work File and replace them in the Master File.