Thanks Daniel. After I reset the downloads in the data manager my shape downloads are now including metadata.
One more follow up question, I noticed that the names of both the zip and shapefile changed to the title from the item details page for the layer (with underscores replacing spaces). Previously it was using whatever we named the service when uploaded to AGOL and it didn't change when we edited that item's title. Is it possible for the download file name to differ from the item details title?
For example, we would like the download file name to be gc_communitycenter_feb15 and the title that shows up in our open data site to be: GeoPlan Cultural Center and Library Facilities in Florida - 2015
Thanks for you help!