Need help in shift use of program files.

Hi.
With the use of COBOL program and SPF/PC I was able to render the output files in the form of .txt ,when I open these files with Notepad ++ or PS Pad, the hexadecimal ‘20’ reduces to ‘9’ but if I use another application like SPF/PC the hexadecimal remains the same.
What could be wrong? I just need to finish this. I would be glad if anyone can help so that in the future if these problems may exists, I can fix things out.
Please advise.
