If you traverse all the levels of the Bodhisattva path and remove all obscurations attaining all wisdoms then Original Mind will have gone nowhere, removed nothing and attained nothing.
When mind knows Original Mind in the unknowing of all concepts then that is Dharmakaya.
Questioner: How does mind come to know Original Mind?"
t.k. - Sometimes children, who live where salt is collected in piles from the ocean, make salt dolls to play with and at the end of the day throw those dolls back into the ocean. It is just like that."