Help Determining Reaction Forces at Independent Node for Cylinder Fixed at 1 Node using RBE2 Elements

'I am a graduate student at Queen’s University in Kingston, Ontario, Canada. I am using Hyperworks for a topology optimization of a lunar rover chassis and was wondering if I could have some assistance with an issue I am having. I am trying to perform an inertia relief analysis of the chassis which means that I need to determine the reaction forces at the wheel connections of the chassis. The model is only preliminary so determining the reaction force at each node (at this point there are ~850 nodes) is not practical. Instead what I have opted to do is constrain 1 node at the center of the cylinder (there are two cylinders so one is fixed in 6 directions and the other is fixed in 5 to ensure chassis is simply supported) and connect this node to all nodes inside the cylinder using RBE2 elements. Here is an image of the constraint:
I want to have the reaction forces of the constrained node so that I can apply one load to this node and connect it to the cylinder nodes using RBE3 elements for the inertia relief model. When I try to get reaction forces using the SPCF global output request control card I am only able to get the reaction forces at the dependent nodes. I would like to know how to obtain the reaction forces ONLY at the constrained nodes instead of getting reaction forces at all dependent nodes.

If what I am asking is not clear please let me know how I can better describe my issue. '