topic GitHub integration and incremental refresh – how to avoid overwriting data? in Developer

GitHub integration and incremental refresh – how to avoid overwriting data?

ua77 — Tue, 24 Feb 2026 14:58:47 GMT

I have a Power BI semantic model with incremental refresh enabled. I am using a GitHub connection for version control, and I make changes in a dev workspace connected to a new branch before merging to main. (that is connected to prod workspace). Currently, when I merge to main, data is overwritten.

How can I ensure that existing data in historical partitions remains intact when merging changes of the semantic model to production?

Re: GitHub integration and incremental refresh – how to avoid overwriting data?

anilelmastasi — Wed, 25 Feb 2026 08:03:25 GMT

Hello ua77 , with overwriting what did you mean? Partitions disappeared? Full refresh triggered? Or actual historical data is lost?

Re: GitHub integration and incremental refresh – how to avoid overwriting data?

ua77 — Wed, 25 Feb 2026 12:52:12 GMT

Hi,
I am experiencing both partitions that have disappeared and historical data that is lost.

When I accept incoming changes from main, all existing partitions (and their data) disappear. When I trigger a refresh of the semantic model, it starts a full refresh and rebuilds all partitions from scratch. The problem is that the full refresh takes a long time and causes downtime for the reports (until the refresh is completed).

Re: GitHub integration and incremental refresh – how to avoid overwriting data?

Anonymous — Mon, 02 Mar 2026 16:57:28 GMT

Hi ua77,

If the issue still persists, I’d recommend raising a support ticket with Microsoft. The support team can look into the backend and provide more in-depth assistance tailored to your environment.
https://learn.microsoft.com/en-us/power-bi/support/create-support-ticket

Thanks & Regards,

Prasanna Kumar