who is andyabrahao?
>"why in version 2019 I could use impedance renormalization to 89 for Zpv and still got the correct results?"
I don't think you did. Probably, you was not clicking the "enabled" Ôÿæ checkbox on.
That would be very interesting if you can confirm that v2019 actually gives different results. As I said, try executing the exactly the same project in 2019, then in 202x.

P.S. really, that is weird. All four impedances produce the same Zo(1) plot. I am confused since not longer than 2 months ago I was pointing out to someone that these impedances are different and are scaled relatively to each other. Not taking into account the difficulties of finite integration.