I was hoping to get some help with an issue I've run into regarding groups and shared content in ArcGIS Online. I have a web map that I've placed in a group's content and added one of my coworkers to this group with full permissions. They are able to open my map, and make edits but upon saving they only have the option to "Save As" and save a copy of the map to their own content/ownership. The "Save" option is grayed out. What's happening here and how can I fix it?
In order to have members collaborate on a single item like a web map, you need to create a group with item update capabilities.
Here is a blog that describes this workflow: