Salvage data from old profile folder

This morning I experienced a very alarming issue with the browser after about a week or so of use - when opening it, it immediately closes.

Did some reading online and there didn’t seem to be a consistent idea of what might be causing it, with everyone eventually leading to a “remove the old User Data”, let it create a new one and use that…which while it did work, also means for me that I lost a lot of non-sync’ed data such as the browser stats on the dashboard and extensions.

Since I have a copy of the old data folder intact, I would like to know - is there is a tool/app that would allow me to import from it only specific things rather than just copy-pasting everything (which I have already tried, results in the same crashing as before)?