WaterCAD introducing Phantom flow?

[MKM16]

Hello, I am using WaterCAD V8 XM and was adding up my flows from my reservoirs and pumps and realized that it did not add up to the total flow I was demanding/seeing at my end node. I was able to locate the culprit and a PSV (pressure sustaining valve) is introducing 30 gpm of flow?! Why is watercad doing this? and how can I fix this problem? Before the PSV it is 500 gpm, after it is 530 gpm, the PSV says it is giving 530 gpm.

I have tried deleting and replacing the PSV and deleting the entire small segment and re-building it.

I am concerned that the rest of my results are bogus now. Please help.