The Manage Layer Properties functionality in Map Viewer has been a fantastic addition. The ability to reset to source layer properties is a game changer in our ability to make changes at the layer level and quickly apply them throughout dozens of maps.
However, currently you can only reset everything to the source layer properties. So we end up still having to redo some custom configurations that we want to be different than the source properties. When using the reset function I almost always just want to pull an updated pop-up configuration while leaving all other customizations within the map (filter, symbology, visibility range, etc.) unchanged.
It would be great if we could individually select properties to reset to source layer while leaving the rest as-is.