It would be useful to add an option in an AGOL Map to apply the layer's default popup view. Currently, if a default popup view is established for a data layer after it was added to a Map, the popup does not refresh to reflect that default popup.
The only way to load the default popup view is to remove the data layer and re-add it to the Map. Which then requires re-setting any other settings (i.e. symbolization, transparency, layer name, etc).