If you look at their data, you'll see that they have 3068bpa2 listed as the LDraw number. That's the correct part
https://www.ldraw.org/parts/official-part-lookup.html?folder=parts&partid=3068bpa2
They also have "Not Used" for some reason. I'd submit a change request at RB to have them remove the "Not Used" entry.
https://www.ldraw.org/parts/official-part-lookup.html?folder=parts&partid=3068bpa2
They also have "Not Used" for some reason. I'd submit a change request at RB to have them remove the "Not Used" entry.