Shibumi: Grani's original data was damaged when it returned to the Digital World. It could have dispersed into the Digital Streams, but Grani is self-aware, and wouldn't let that happen. Grani held on to an image of itself that Daisy was able to rebuild. But it still exists as data only, until we give it a form in the real world. That's where the Digivice comes in; It teaches data to behave.
Terriermon: Kinda like you.
Henry: Except you don't listen.