I have a screenshot showing that I actually did go into the battle with the Moltres, but for some reason, I'm not able to attach the image at the moment.
Please help, when I was catching the Moltres at spawn, I used the master ball that was given with downloading the modpack but for some reason, it glitched out, the moltres disappeared, my orb is gone, and I don't have the moltres anywhere.