We are starting with QuickBooks Online at the beginning of our new fiscal year which is September 1. If I migrate from QuickBooks Desktop, does it move all information from the beginning of the desktop usage? Our desktop software starts in September of 2016.

Also, if we decide to do a clean start, how would I import 1099 information? W2s are done through a 3rd party, so there's no concern with them, but the 1099s are done in-house.