No - there was some discussion on such a feature, but im/Export from/to such complex formats is very difficult and often impossible to get perfectly right.
I've always heard that "perfect is the enemy of good" and in my experience as long as the tool communicates "I did what I could, and didn't know what to do with the following elements" then clear communication can go a long way toward allowing users to make informed decisions
That's unfortunate. I have one large file that contains everything for a particular project. I migrated from Sketch to Figma a couple years ago and did so using their import. It was not perfect, but was better than nothing. It took a few days to clean it up again, but was a good starting point for migration. As the file has years of work in it, starting over would be a significant amount of work.