You can import link charts from a portal into your studio project if it references the same knowledge graph as your Knowledge Studio project. Importing a link chart will create a local copy inside of your Knowledge Studio project.
- Click Add Content
at the bottom of the Investigation Contents 
pane.
- Click View items in portal. The Import Content dialog box appears.
- Browse, search, filter, and sort portal content to find the maps you want to import into the project.
- Select any number of link charts to import.
- Click Import.
Your link charts appear in the Investigation Contents
pane.