We still have old runtimes compiled with VS COBOL II because we don't have the sources anymore. We are migrating to Cobol LE and Z/OS 2.1 We are testing in this new environment and these old runtimes are still OK. Some of them call runtimes compiled with Cobol LE others are call by LE Cobol runtimes. We don't have met any problem yet. May I hope that we shall continue this way at least as long as we shall keep Z/OS 2.01 ?
nb. the application involved doesn't use any database system, only VSAM files.