I'm working on a final 5500 with an employer reversion. The 2020 instructions still don't provide guidance on where to put the employer reversion to allow the assets to reconcile (as far as I can see). I know for accounting purposes it's treated like a negative employer contribution. I tried entering the amount as a negative employer contribution [line 2a(1)(A)] into Relius Webclient and I didn't get an error. My current plan is to go that route unless I end up getting better guidance from the auditors. Since the negative employer contribution amount will match the employer reversion amount on line 5a, I'm hoping that won't raise any questions. I'll let you know how that goes...