Spark Max ID not sticking

We have run into an odd issue with a spark max. We got them second hand but in new condition from ebay. We ID’ed them with the spark utility and updated all the firmware to 1.51. After ID’ing the maxes to run a 4 neo drive train, things started well and the robot was responding as expect. After a few minutes of driving, one side of the drivetrain stopped responding. One of the sparks started blinking “pink.” When we went back into the utility, the ID of the blinking neo went back to zero without any input from us.

Has anyone else seen this behavior before? If so, what caused it and how would this be resolve this?

When you set the CAN IDs did you press the ‘Save Configuration’ button on the bottom? This will burn the parameters into flash.

yes, we saved all configurations

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