Re: Different Physical File Attributes.

You can verify this with DSPPFM before and after the RGZPFM.

RGZPFM will also remove records flagged for deletion.  This may free up 
some space.  See this from DSPFD
Current number of records . . . . . . . . :                341324
Number of deleted records . . . . . . . . :                  8561

I've got over 8500 deleted records still taking up space in this file. 
People have written utilities to do a massive DSPFD to an output file. 
Then they take the number of deleted records and multiply that by the 
record size to get the space used by deleted records.  Then sort the 
result descending to know where you'd get the biggest bang for the buck 
with RGZPFM.  Then figure out a way to pipe that into RGZPFM.  The only 
problem with this is:
1 - Automated utilities do not take advantage of the KEYFILE parameter.
2 - Some files are needed in arrival sequence.  Don't see this too often. 
But I do see it in EDI applications on occasion.

Rob Berendt