Steps to reproduce: 1. Hide any series by clicking on the legend's items 2. Update the data (my series are bound to a List of custom items and I use the serie's Mapping delegate to convert the item to DataPoints) 3. Refresh the plot (I bind to the plot's InvalidateFlag property and increment its value) 4. Make the series visible again by clicking on the legend's items The series that were invisible when the data changed are not updated on the plot.