Issues with Management PTP670

I have a PTP670 connectorized link with both radios running 50670-02-70. Recently we have observed high packet loss on this link on management only. No packet loss has been reported by our NMS on the data side. I recently encountered a similar issue with an ePMP3000 radio running that I resolved by downgrading firmware to 4.5.5. Thoughts on what this could be?

Please upgrade to the latest firmware version for PTP 670. We have fixed a few problems that affected the reliability of management traffic. Details are in the Release Notes.