New data aggregation feature in the Advanced Chart widget

Hi, I really like the Advanced Chart widget. Is there a way to clear old data points so the aggregation is not used? I have a chart on my dashboard but the aggregation causes problems when I try to analyze the data and the values do not match the exported cloud data. I am forced to always export to check data but it would be nice to use the dashboard for quick checks. I need to see the real values but I would be fine if I could clear old data to create more space in the data set. I am currently collecting a new data point every 5 minutes.