Location of VST plugin settings? (updating older projects)

Hi, I’m updating some very old projects for Cubase 13.

Anyone know where the settings within VST plugins (preset + changes) are stored?

eg.
VST: HalionOne
Preset: Lead 3
Settings: Resonance 8, Attack 10, Release 23, Cut off etc. etc.

A bunch of my plugins need/ have been updated/discontinued so I can’t open the vst and see the settings.

Cheers