You can export maps you create in Knowledge Studio to your portal content. This will create a copy of the map as a portal item. Any changes you make to the map in Knowledge Studio will not affect the map on the portal.
Note:
Knowledge graph layers may not be supported in other ArcGIS Enterprise applications.
-  Click Options  for the map in the Investigation Contents pane. for the map in the Investigation Contents pane.
-  Click Export to Portal. The Export wizard appears.  
-  Optionally:- Type a title. A title is required to save the map.
- Choose a folder in My Content where you want to save the map.
- Use the drop-down menu to select one or more categories for the map if your organization has set up content categories.
-  Type tags that describe the map.Tags are words or short phrases that describe a map. Separate the terms with commas. Federal land is considered one tag, while Federal, land is considered two tags. 
- Type a summary that describes the map.
 
By default, the item uses the name of the map in Knowledge Studio and saves to My Content.