Unlike a dataset refresh during which Power BI imports data from a data source into a dataset, OneDrive refresh synchronizes datasets and reports with their source files. By default, Power BI checks about every hour if a dataset connected to a file on OneDrive or SharePoint Online requires synchronization.
Power BI performs refresh based on an item ID in OneDrive, so be thoughtful when considering updates versus replacement. When you set a OneDrive file as the data source, Power BI references the item ID of the file when it performs the refresh. Consider the following scenario: you have a master file A and a production copy of that file B, and you configure OneDrive refresh for file B. If you then copy file A over file B, the copy operation deletes the old file B and creates a new file B with a different item ID, which breaks OneDrive refresh. To avoid that situation, you can instead upload and replace file B, which keeps its same item ID.
You can also refer to the following documents.
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