The MTD by the AG lawyers was deemed moot because nutjob Orly filled a amended complaint (due to errors in her first motion) that the AG now has to respond to.
The AG has already filed a motion to dismiss the amended complaint. You can read that
here.
People are misunderstanding the significance of this ruling. All Judge Lamberth did was to dismiss, as moot, the original motion to dismiss the original complaint. He dismissed it as moot because (a) Orly filed an amended complaint; and (b) The AG's filed a motion to dismiss the amended complaint.
Therefore, the contention that the judge declared that the case is "not moot" is just wrong.
In short, the AG's amended motion to dismiss (and opposition to motion for preliminary injunction) is still on file and Judge Lamberth will issue a ruling on it. Probably soon.