COBOL migrations are tar pits of replicating 40+ years of undocumented niche business logic for a given field, edge cases included, that was "commonly understood" by people who are now retired or dead. Don't get your hopes up.
MicroFocus has COBOL compilers for Java and .NET, as do other COBOL vendors still in business.
Usually the biggest issue, is that most of the porting attempts don't start there, rather they go for the rewritte from scratch, and lets not pay the licenses for those cross-compilers.
