Hi, @ontstudios. It looks like a variant of what I’ve posted elsewhere, like here, will work. I just downloaded Edge Beta and tried it. Essentially, you copy your bookmarks file directly from the Edge profile folder to you Brave profile folder. Depending on when you installed the Edge Beta, the profile folder may be in a slightly different place, but for the one I just downloaded, the path to Bookmarks for Edge is
C:\Users\YOURUSERNAME\AppData\Local\Microsoft\Edge\User Data\Default\Bookmarks
I also see folders for Edge Beta, Edge Dev, and Edge SXS, so if your current file isn’t where mine is, check there.
With Brave closed, just copy your Edge Bookmarks file to you Brave profile folder, which should be
C:\Users\YOURUSERNAME\AppData\Local\BraveSoftware\Brave-Browser\User Data\Default
Here’s a pic to illustrate (click to enlarge):
