Ooh that's an interesting one.
Say they did, over a couple of years, retrack it entirely, slowly replacing the wooden track with the steel track. The feels like it should be a different cred? You quite literally have gone from a wooden coaster to a hybrid coaster, and they're very different things, even if they have the same layouts.
Presumably when converting from wood to steel there would be some sort of reprofiling too? Even if it's just minor, it feels unlikely to me it would be completely the same? That's just a guess on my part though, so could very much be wrong.
I'm normally in the camp of 'if a park retracks a ride piece by piece over several years it's the same ride'. But this feels different.
Way I see it is it's like pizza: if you order a "ham and pineapple" pizza, take off some of the ham when it arrives, and replace it with a different type of ham, you still have a "ham and pineapple" pizza. If you eventually replace all the ham with the new ham, it's still is that pizza. That's your normal slow retrack.
If you take some of the ham off when it arrives and replace it with bacon, you've changed it, but enough to still call it the same to what it was earlier. But if you eventually take off all the ham and replace it with bacon, it's fundamentally different. That would be this weird scenario of if they slowly replaced all the wooden track with steel imo.
Personally I'd be very surprised if the track was replaced with steel track over a number of years. So I guess it's a mute point in that sense. But still, an intriguing development.