@thomasfuchs Having worked on many of these systems when I was consultant it's often 'the team who wrote it left and we have no clue how it works'. So no team / manger wants to touch old systems & the risk of building replacements without understanding the original is way too high for the super-risk averse banks. ind you it employs a bunch of VB6, COBOL and LISP devs who otherwise would be skilled out of the market so not all bad ;)