Outside of looking a Cobol once or twice I have almost zero working knowledge of the language. But still this feels like something a transpiler could handle. Or maybe a next gen LLM if direct translation of the source isn’t desirable but just the core logic
in fairness… this is more a limitation of the current technology. your look at gpt4 and going not an expert. but what about gpt5 or 6… or some of the newer ideas like microsoft plan for 1 million token model using attention dialation mechnism. The point being we are still on the ground floor. And these models have emgerent functionality