Power BI & Ms Project connection - Pulling outdated data.

Hi Seroser -Sometimes, when connecting to Project Online or Microsoft Project via Power BI, the connection may reference an older dataset or cache. Make sure you're pulling from the correct environment, especially if there are multiple instances (e.g., development and production environments and so on).If your organization uses multiple versions of Project Online or has migrated from one environment to another, ensure that Power BI is connecting to the most recent version or instance of Project. Outdated connections might result in seeing older project data.

More details and reference links:

Connect to Project Online with Power BI - Power BI | Microsoft Learn

Configure scheduled refresh - Power BI | Microsoft Learn

Hope this information helps.