How to restore extensions from a clone to a rebuilt macOS machine?

I have a clone on an external drive of my primary machine, presently in for repairs. I copied all user library files from the clone to my rebuild. Upon launching Brave, I get a prompt reading…

Some settings were reset
Brave detected that some of your settings were corrupted by another program and reset them to their original defaults. Learn more

…And all items disappear from ~/Library/Application Support/BraveSoftware/Brave-Browser/Default/Extensions.

I see my name and icon under menubar “Profiles”. I see my old/primary device under brave://sync/ (and it’s described as “this device”).

How do I restore my extensions? How even do I find at least a text or GUI list of my extensions to reinstall manually?

• Version 0.70.122 Chromium: 78.0.3904.87 (Official Build) (64-bit)
• macOS Catalina 10.15.1 (19B88)

[nhuesmann]

@bsclifton I just wanted to thank you, your solution helped me get my extensions back after a Time Machine restore did not recover them automatically. Found the JSON file in the stated location in the backup and looked up each id in the Chrome extensions store. Thanks!

[jtheletter]

Thanks for your reply.

Nothing showed in chrome://extensions/ on my new machine after copying my user library files from clone to rebuild.

The Preferences file (726,944 minified characters) indeed has the IDs you specify, and those IDs do result in extension names when searching the Chrome Store, thank you for that.

I’ve upvoted the linked ticket. Cheers.