Lumen is trying to resurrect kier.

Basically my theory is that MDR is piecing together the personality of the dead former kier family members. The data they are sorting are bits of the personality that has been gathered from writing, dairies and other sources. Sorting them into the four boxes later to be implemented into a host.

Thats what the chip is for, when a kier family member is fully integrated they will permanently sever a selected host (mark s) and implant the kier persona into that body essentially resurrecting them, giving them full and permanent control of the host body. Then transfer from host to host until they have successfully perfected cloning. At which point they will transfer the persona into the cloned body.

The entire severance process is beta testing of the chip to make sure the host is permanently severed with no ill effects on the new persona