Composite model Refresh issue

Hi Flypigeon0929​,

When you connect to an existing semantic model and then add another data source, Power BI creates a composite model. The important thing to understand is that refreshing the consolidated report doesn't automatically refresh the data in the original semantic models.

I’d check the refresh history of each of the three original semantic models in the Power BI Service first. If they use Import mode, their refresh schedules still need to run independently. The consolidated report will query the data available in those models.

Also, check the storage mode of the tables in your composite model and make sure the connections and credentials are configured correctly. A refresh completing in one second doesn't necessarily mean anything is wrong; it may simply not be refreshing the underlying imported data.

For your scrolling requirement, the composite model approach can work. You can keep the three summary pages in one report without rebuilding everything, provided the model connections are configured correctly.