I'm still in firm belief she's performing this on the BBMA, i mean how can she not, its right around her album release.
She would have said "oh I'm not going" by now, i think she's keeping it a surprise *fingers crossed*
Then release the video right after the performance for those streams.
Depends on the artist she's working with, with Ariana their visions are very creative.
Plus i'm sure Ariana's team has a bigger budget for a video than 5H, Tinashe, Hilary Duff etc.
If she did a deal with Billboard that the first performance with Into You is at the BBMA (like she did with Break Free and the VMA) that's mean she will not perform with this at GMA