Just rewrite it with 80% functionality and force migrations on the users. Once the remaining 20% "edge cases" that require serious effort hop to the next job - where you where hired to "maintain" such a system and "just add a small feature here and there". Ooops.
There are a lot of employers that'll throw good money at you for maintaining and extending their outdated crap. Have you ever considered learning COBOL?
Nah, Tucker worked on the Moonlander Project (which got the Starfleet recruitment officer to believe that he has actual experience in aerospace engineering and landed him his current job).
Just rewrite it with 80% functionality and force migrations on the users. Once the remaining 20% "edge cases" that require serious effort hop to the next job - where you where hired to "maintain" such a system and "just add a small feature here and there". Ooops.