Just a heads up for anyone running FAZ's in Collector mode and Analyzer mode with FGTs with vDOMs. There is a bug documented Bug# 613115. that describes this with FAZ3700F 6.2.3 in Analyzer mode with 2 FAZ3500Es in Collector mode.
The bug has not been fixed in FAZ 6.2.5 or 6.2.6. Here is an example on 6.2.6 build 1349