So I was having a Voss fight and Ra was having not a fun time. He went down early in the fight. Nothing unusual there, right? Welllll Completionist Guise was there. While Ra was incapped I decided to use Guise's base power on him and swap out Setting Sun Ra with Base Ra. When I did that HE CAME BACK TO LIIIIIIFE...as an unknown HP target (looks like he started out with 28) that still used incap abilities. Gonna file a bug report, but here's a log of the amusing interaction.
https://pastebin.com/Y9Vc6YXh