Once you have generated an extraction file, you can choose to discard or keep the input files. IDF needs only the extraction file and the module file, and the LOAD MAP on CMS.

z/VM and z/OS

If you have several separately compiled programs which are linked into a single module, you can either retain an extraction file for each of them, or you can copy them into a single appended file for convenience. It is recommended you keep them separate, in case you want to change and recompile one of the separate compiles.