Imported three tables from Excel files stored in Sharepoint. When trying to create relationships between the tables in the Model View in Power BI Desktop the tables turn gray, I can no longer move or interact with the tables, or see the relationship lines. The only way to interact with the relationships is using the Manage Relationships button in the ribbon. All three tables have their storage mode set to import, so I should be able to create the data model in the Model View. Please help! I'm using the updated March version of Power BI desktop.