After activating Enterprise Mode List via GPO the original MS Egde List dosn't works

Matthias_Boecker Hello!  We are trying to understand the question a little better, would you be able to provide more information about the issue you've encountered?  

Do you have a site that you've added to your Enterprise Mode Site List to load in IE mode which is also on the Need Microsoft Edge list (https://edge.microsoft.com/neededge/v1)?  

Or since you've started using IE mode, none of the sites on the Need Microsoft Edge list move from IE to MS Edge?  Thanks! 

-Kelly