Can you please provide more details about how you parsing CSV or pdn article link?

Here's the link to PDN article - https://pdn.pega.com/integration/how-to-parse-a-comma-separated-values-csv-file-using-a-file-service 

check if DL-18625 solves the problem. (this is on PRPC 6.3 SP1)

Can you please give more details on DL-18625?

Would it be possible that something in the activity that gets executed while processing each record is causing the rows to be skipped. This entire process is basically for "BulkOperatorLoad" (available in Pega Exchange). I made some changes to this activity to record errors if there's any data that is missing or invalid. I'm calling a Validate rule inside the activity that gets executed when a record gets processed by Service-File rule. Any errors are written to a .txt file using Connect-File rule. If there are no errors, then the operator data is inserted/updated accordingly.

DL-18625: fixes the issue of alternate rows getting skipped while parsing a csv file in PRPC 6.3SP1

please go through DL-18625 (from Pega Global support team) if it works for your use case...

Ok. After some investigation I could find that the culprit was a "FinalActivity" I added to the Service-File rule. This Final Activity involves creating a done.txt file once all the records are processed. This is somehow causing the skipping of alternate rows. I need a FinalActivity to get executed. So any suggestions to overcome this issue retaining FinalActivity of Service-File. 

P.S: I would like to keep the HotFix as last resort.

HFix-6765 has been issued for PRPC6.3SP1.

Hi Indrajit,

To execute final activity in Service-File rule Hfix-4847 needed to apply for PRPC6.2SP2

Please mention how are you saving the record.