I was going through some of the JCL's which include VSAM's in their processing.
I have come across similar situation in many JCL's that 2 similar steps are present one after another when ever VSAM is involved.
The first step looks like copying data from VSAM file to a Flat file and the very next step is copying back data from Flat file to VSAM file.
Can some one throw some light if there any significance behind this?
I can see from comments that Step1 is called Securing(Backup) VSAM file by copying contents to Flat file and Step2 Restoring(Reload) where data is copied from Flat file back to VSAM.