Output Discards on switch port does not update to reflect new status

Output Discards on switch port does not update to reflect new status

I have a problem. Multiple switches are showing a polled value of something other then zero. For example, I had output errors in a port and it says last polled value is 3299. after making a switch change I cleared counters and that port is saying zero discards for the last several days. What do I need to do to have Opmanager reflect this. Removing the counters and re-adding does nothing and still is issuing alerts from old data.

Suggestions???

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