Hello,
I had faced the similar thing. Medicals got passed around Nov 2018. RR since Jan 2019. However, my spouse medicals expired on 18 May 2019 and mine will be on Nov 2019. On June 4th 2019, my medicals got changed from 'You've passed' to 'You do not need medicals'. In few forums, I read this as a normal behavior for medical extension or redo request. In my case, myself as primary have valid medical till Nov 2019. No idea what got changed. Anyone with similar experience in the past, please shed some light.