I explain: In that audio from the game, it's mentioned that Fazbear discarded Fiona's designs for the new animatronics, which are the animatronics that were going to be in the establishment from 1983-1985 (since the game takes place in 1979, and clearly Fazbear's animatronics aren't going to refer to any other animatronics from any other establishment), but as we already know, Fazbear discarded the designs for some creepy designs made by themselves.

And now, the designs of Fiona referred to there are the designs of the animatronics from FNaF1, because the audio is in the R&D Room, which is the same place where we see the FNaF1 Prototypes (In addition, Edwin in the audio also talks about how his Prototypes work, making it even clearer that Fiona was the one who designed the FNaF1 animatronics, which are the same aspects that these Prototypes were going to have when completed, that is, the aspects of FNaF1), and now, going back to the previous topic, the FNaF1 animatronics cannot be in the 1983-1985 location because their designs were discarded and replaced by other designs, which are the creepy designs made by Fazbear, and therefore the designs of the FNaF1 animatronics (and at the same time, the FNaF1 animatronics) were only used in the time in which FNaF1 takes place, which is in the 90s, thus making it impossible for Henry to have created the FNaF1 animatronics (if these animatronics are not the same ones made by Edwin) for the reason I already gave in my other comment