A family of Microsoft spreadsheet software with tools for analyzing, charting, and communicating data
Dear @Justin,
Thank you for posting your question in the Microsoft Q&A forum.
I truly appreciate the time to share your experience and resolution. Your detailed explanation about the root cause, tables being loaded from the source instead of Power Query, and the corrective steps you took will be extremely helpful for others facing similar issues. Community contributions like yours make troubleshooting faster and more effective for everyone.
Therefore, I would make a brief summary of this post so that other forum members could easily find useful information here:
Issue Description:
A custom column added in Power Query did not appear in the corresponding table in Power Pivot. Attempts to refresh the data model and check connections failed. The Table Properties option was greyed out, and the only workaround seemed to be reloading the table, which caused duplicate tables and broke existing measures.
Current Solution:
The tables in the Power Pivot data model were not actually loaded from Power Query as assumed. They were loaded directly from the source data, so schema changes in Power Query were never propagated to the model.
All tables in Power Pivot were deleted and reloaded from Power Query to ensure the data model is driven by Power Query queries. This allowed new columns and transformations to sync properly without duplication issues.
To avoid this issue going forward, here are some steps I recommend you try:
Step 1: Always load tables from Power Query into the Data Model
In Power Query, use Load To… and select: Only Create Connection or Add this data to the Data Model. Never load directly from the source if you plan to apply transformations in Power Query. For reference: Connection only Power Query
Step 2: Check “Queries & Connections” regularly
Step 3: Avoid mixing source and PQ loads
If you need raw data for reference, keep it separate from the tables used in the Data Model.
Step 4: Refresh strategy
Use Refresh All from the Data tab or Power Pivot > Refresh after any schema change in Power Query. For more information, please refer to Refresh PivotTable data
I hope this information is helpful. If you have any further questions or need clarification, please feel free to reach out.
Again, I truly appreciate your patience and understanding. I'm looking forward to hearing from you.
If the answer is helpful, please click "Accept Answer" and kindly upvote it. If you have extra questions about this answer, please click "Comment".
Note: Please follow the steps in our documentation to enable e-mail notifications if you want to receive the related email notification for this thread.