Hello Paul
YES -- that was the same LIRR line and open cut -- here are two aerial photo views of the same cut --- one looking N.E. away from Parkville, and one S.W. towards the Parkville Jct side. New commercial properties as seen were built over the cut with a railroad tunnel provided below them for the tracks (called selling "air rights", heh)
As I haven't been up there in many years -- I don't know the use or active status or condition of the apparently ONE track left in the cut.
BELOW are the two aerial image LINKS -- when opened you can zoom in, out or move in any direction on those images or get street views...I guess you would know that anyway.
Aerial Photo-S.W. to Flatbush-Nostrand along LIRR Parkville Cut Line-2016
Aerial Photo N.E. to flatbush-Nostrand along LIRR Parkville Jct Line Cut - 2016
regards - Joe F