They had two whole seasons recorded before it was cancelled.
What do you mean by recorded? Because if you mean what I think, I find that hard to believe.
Voice recording. Dee Bradley Baker has come out and said as much.
I somehow doubt very much that that’s actually true.
The Lost Missions were 13 episodes long. They’ve publicly shown an additional eight episodes in rough animatic form, comprised of two arcs, the second of which was the season 7 opener. As well as a glimpses of fully voiced scenes from two other arcs that were four episodes long each.
Well okay, I thought you had meant two seasons recorded in addition to all that they’ve already released. Even still, the suggestion that the dialogue recordings (and thus scripts) for the entirety of two seasons were all completely done seems somewhat unlikely to me. At least some of those episodes were probably still in progress when they were cancelled.