Todd,
There are two issues here: The layer properties are disconnected from the source data's metadata, so they are not a "view" into the metadata, only a one-time import when the data is added. I have added an "idea" to create a script tool that would update the layer properties for all layers in an MXD from their source data metadata. You can view and upvote it at https://community.esri.com/ideas/16585-script-to-update-arcmap-layer-description-and-credits-from-so...
There actually IS a way to view the source data's metadata, but it's not in layer properties. Right click the layer in the TOC, and select "Data", then the option to "View Item Description". There you will see the actual source data metadata as it shows on the layer itself.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.