You can choose to use that FP on another ride on the list you get, or wait for your original ride to come back up. But since you used it on Soarin, you won't have it for TT if it comes back up.
The anytime FP is the same as multiple experience. You'll have a list of rides to choose from in your
mde app, you might also get an email for it, and you can always speak with a CM at the ride that went down and they'll let you know what rides/shows you can use it on.
Bonus: if you have a night FP and it goes down, like TT at 8pm. Then your anytime FP you're issued will be good for the remaining night, and also good for the next day at any park. There will be a list of excluded rides/shows, but it's a nice bonus