Old proj - Figure out which patch on obsolete VSTi

Hey brainy Cuboids
This happens to me all the time probably cos I take ages to finish anything.
Open an old project and a track (or several) has an outdated VSTi. You can map it to a newer one but information about which patch was used is missing. Obviously with a new VSTi there’s no guarantee the patches will be the same but it could be a clue. Could save time trying to rebuild the sound.
Any tips or tricks?