Forum Discussion
How to copy Edge profile to a different machine INCLUDING search engine preferences and extensions
You may be encountering two different safety mechanisms here.
The default search provider is a sensitive setting which I suspect is subject to special protection. I think your question illustrates just how sensitive a matter this is. The search provider preference can only be changed by positive user action, so changing it in any other way - like copying settings from one machine to another - should not be possible. If a non-user-initiated change is detected, Edge will revert to its default, which is Bing.
Extensions are a popular vehicle for introducing malware. Again, they have to be installed by the user (or in some cases by the administrator on managed machines). That's probably why you can't just copy extensions from one profile to another: it would be just too easy for a bad actor to introduce a malicious one.