UMESH PANDIT,
thanks for your reply, but after reading the article, I've got additional questions, because the article is describing "Deployment to Sandbox and Production", but I need "Deployment from Sandbox to Production".
The questions are:
1) Can I enable both Sandbox & Production D365FO in one Power BI account? Is it safe? I worry about the Sandbox data, which can confuse users of Power BI.
2) If I can't enable both Sandbox & Production D365FO in one Power BI account, then I still have the initial question - how do I get a file from Sandbox to see it in the "Deploy Power BI Files" page of Production?