Jehovah Witnesses teach that Abraham, Isaac, & Jacob will not be in heaven, so then how do you explain Mt 8:11?

Jehovah Witnesses teach that Abraham, Isaac, and Jacob will not reside with Christ in his heavenly kingdom. If this is so, then how do you explain Mt 8:11 in which Jesus says, “But I tell you that many from eastern parts and western parts will come and recline at the table WITH Abraham and Isaac and Jacob IN the kingdom of the heavens"?