I will admit I did not think of that aspect of it. I think the reason I didn't is because, supposedly - as it was presented to me at the time, those systems run on some ancient hardware/software. In other words, even if something was left behind, it shouldn't be that hard to locate.
If anyone with real experience in that area could chime in. Until now I was under impression COBOL ran it all:P
Worked in IT a long time ago for a branch. There was some Java, a lot of Perl and SVN. We got releases from DC to run on local servers. Folks with experience with SDLC were prevalent and that was a prerequisite for doing anything meaningful. Never saw Cobol, doesn’t mean it wasn’t there.
If anyone with real experience in that area could chime in. Until now I was under impression COBOL ran it all:P