Catalytic Converter/ Engine Misfire

I did have to drive it about 1/4 mile to the dealer as soon as it started misfiring (Luckily I was close and there was no other way of getting there). I believe the light was flashing and I had to start it a few times, stalled out, the cylinders were definitely misfiring.

It would make sense that the engine misfiring may have damaged the catalytic converter, but does that explain the rough running and low idiling RPMs I’m still experiencing? I don’t believe it’s misfiring at the moment and those codes aren’t coming up anymore.