I am using the XamGeographicControl. I load a series of about 8000 points and have a DataTrigger to map or hide select points based on a binary flag found in each point.

As i set the flag for points, some of them appear and others do not.

Now, without changing the flags, if i zoom then some points seems to disappear and reappear as i zoom the map.

I am wondering if there is something going on within the control to perhaps optimize the data in some way, that results in this.

For example perhaps if there are two points in the same place, could the points i wish to see but cannot - perhaps they are optimized out - while another point i wish to hide is over top.

It seems random which points are shown. Maybe when points are close together the control drops one?