Yes, they paid interest. Mine was from a 2018 return if that helps. It never showed up in the system as having been received, and I was never able to get anyone on the phone. Receiving the check today was a total surprise. In the beginning, I would check my mail every day. But eventually, of course, stopped doing that. I wonder whether some amended returns, depending on the issues they involve, have to go to special reviewers and whether that slows downs certain types of amended returns.
