On Thu, 11 Dec 2025 11:23:57 +0100, Radoslaw Skorupka <[email protected]> 
wrote:

>Same FMID, same set of PTFs, but results are different - load module
>created in V1 consist of few MODs, while second case causes to not link
>several modules and resulting LMOD is smaller.
>Many LMODs are affected.

Have you tested both versions of the install? Both should be functionally the 
same.

To investigate this difference, use AMBLIST LISTLOAD and compare the 
differences in the load module. Most likely some csects will occur multiple 
times or csects have been orphaned (missing from V2). As Kurt says, the most 
likely cause would be CSECTS that SMP/e does not know about.

If multiple versions of a csect are occurring, then I'm guessing that binder 
resolves addresses using the last occurrence which should be the most recent 
version. 

Another possibility is the CSECT alignment which I believe is double word. 
Different module sequence could cause this difference.

V1 should have every module in V2 with a matching length.

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