Example:

common/technology/nsc_technologies.txt

has the exact same directory and file name in this mod as in NSC2 Season 5.
As such, it is completely overwriting that FILE. Not just the keys, such as "tech_pd_destroyer_1".

If the keys are the same, the keys are USUALLY just simply overridden by the mod that is loaded last. However, when the file names are exactly the same, the paradox launcher(?) will attempt a full file override. This means plenty of actual techs in NSC2 are NOT showing up!

To fix this issue there are 2 options:

1) easy way - "patch" way - just rename the files zz_nsc_technologies.txt so that it only overrides the keys and not the whole file; the "zz" at the beginning will cause it to be loaded last lexiographically and prevent exact file-name match cause overwriting of the whole file.

2) hard way - "overwriting" way - do a file diff and copy over all the missing techs in NSC2's nsc_technologies.txt file (and 00_eng_tech.txt). Then add the weights and what-not.