Gap in data collected from OpManager

Good morning,

I currently have a data source set up in Analytics Plus that collects information from our OpManager installation on fifteen minute intervals. This morning, I saw that the last data sync from OpManager had failed. As such, I performed a manual sync.

After performing this sync, I can see a gap in the data available within Analytics Plus. In OpManager, there are readings for a specific monitor from the 26th and 27th of August; however, this information isn't found within Analytics Plus. As such, the reports I'm running out of Analytics Plus don't match the values in OpManager. I am wondering how I could go about resolving this issue? Thank you for your time.