Unable to see Network Megabits sent/ sec graph

Hi Team,
As a part of our testing we are supposed to measure Network Megabits sent/ sec from Load Generator as one of the counter. Until last few weeks we were able to capture this graph from Neoload Monitors. However I not getting these graph in the resent tests. The only change that I can remember is I moved Controller and Load Generator on the same machine which initially were on different machines. Can that be the reason for this particular graph to disappear?