I’ve recently migrated from Chrome due to Manifest V3 and the pain point for me not fully migrating is not being able to import tab groups. I have around 10 tab groups I actively use for development purposes, preventing me from moving.
The only alternative I can try is converting them one by one into bookmarks, and then importing the bookmarks, and then converting them back to tab groups.
I’ve seen a closed post from 2021 mentioning this. Will be super helpful.