I have a layout and trying to configure the Legend. In the layout view, I have configured to have a single layer of population density in the legend. This works fine. However, when I export a jpg or pdf, a mapservice I pulled in from another party has it's turned on items show up in the legend. The only way I can control them in the Legend when I export the map is to turn the layers on and off in the Map Frame. The mapservice legend items are not showing up in the on screen layout and the items from the mapservice are not in the Legend Contents. These items are shown below. The mapservice items are the water features and the Tax Parcel Composite.
To stress this again, they are not in the on screen layout. They only appear when I export the map.
Can I turn this off in the legend and have them on in the Map Frame?
I'm using ArcGIS Pro 2.5.2
