I tried importing my wordpress (self hosted) to wordpress.com, I later received an email stating that the import was not succeful. It’s been over 24 hours and I still can not try to import again. It still says processing.
Once your .com site is ready to go, if your intent is to use WordPress.com as your primary site, you can update your name servers to point to WordPress.com and everything will work properly. If you need help with that, just let me know.