I’m not sure what your groups look like for your xlate but you’re going to have to reference the second itteration of that field. The ~ represents a repeating field and since the DOB is in the second iteration you’ll have to reference the second iteration in your xlate.
Like I said, I’m not sure what your varient looks like but it would be something like this:
0(0).QRF.00098(1)
(in your source just put the (1) after the field numbers to reference the second iteration of that field)
