Which method is NOT suitable for performing data refresh in Power BI?

Data refresh in Power BI is essential for keeping reports and dashboards up-to-date with the latest information. The method identified as not suitable for this task involves the process of re-importing everything again. This method is inefficient because refreshing data is designed to update the existing data model incrementally rather than replacing it entirely.

When using Power BI, manual refresh in Power BI Desktop allows users to update their data model with just a click, making it easy to keep the reports current during development. Automatically scheduled refreshes in Power BI Service enable routine updates without manual intervention, ensuring that datasets remain synchronized with their data sources. Using a gateway for real-time data facilitates live connections to data sources, allowing users to view up-to-the-minute information seamlessly.

In summary, re-importing data does not align with the efficient refresh methodologies offered by Power BI, which are designed to streamline the update process and ensure that users can maintain current data without excessive effort.