PCB Editor Total Length Constraint Not Matching Pop-Up Display

I'm in the process of routing some DDR4 devices in a fly-by topology which requires trace length matching to the first device then each device in the series. To accomplish this, I am trying to use the Constraint Manager's "Total Etch Length" CSet. I've created a CSet with a minimum etch length of 2485 and a maximum etch length of 2505 to the first device. I can set this to my net class (which are all currently less than the maximum), but when I go to adjust length and tune, the pop-up window shows the net exceeding the maximum etch length setting. Based on the settings and total length, it should be under the maximum.

My plan is to trace match to the first device destination, then adjust the trace lengths to the second, and so on...

See my screenshots below with the net D1_MACT_B as an example

I have a feeling it has something to do with the "Unrouted Net Length". How do I properly set a constraint to measure the actual "Total Etch Length"? 

My tool set is Orcad PCB Designer Professional 17.4-2019 S007.