Where do you think they went? If they mostly went to work elsewhere because as part of the "Great Resignation" because they found better opportunities, then perhaps you accomplished your social mission (which was presumably giving them a foot in the door of gainful work), even if it was at the price of the business.
Maybe structural impediments to employment for felons came down due to a tightening labor market?
For example, in CA, laws are being passed to allow formerly incarcerated wildlands firefighters to work in that job after release:
https://leginfo.legislature.ca.gov/faces/billTextClient.xhtm...
If they resigned instead due to hopelessness and falling back through the proverbial cracks of society, that's a terrible result.