Hello Jon Emch, I have the same problem here in my Power BI desktop version. It doesn't save the changes I have made in the ArcGismap. I already updated my Power BI desktop to the recent release in May. Also, a few weeks ago I noticed that when I published my Power BI desktop report to PBI online, the heatmap I set was gone. Only the default theme of the ArcGismap appeared. Based on the reactions on this page the two problems are probably related? My server is located in the Netherlands, Western Europe.
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