Is there a way to import Raw files into LR catalog ..including..any edits performed in an external raw file editor such as Capture One?
I can import the Raw file successfully but cannot see any edits that were applied in Capture One. Im assuming no but just checking.
Your assumption is correct, Capture One, Lightroom and other third party raw processors have their own proprietary processes and profiles for rendering the raw data.
They do not make permanent changes to the raw data and store the changes to an .xmp file or to a catalog file like Lightroom.