I might not have been clear, there are probably (hopefully) official daily tally of deaths for each state that they are certain are from that day, which are used for understanding trends and making decisions. The dump of additional deaths is most likely for accounting purposes not to be used to understand trends but track overall impacts. The tracking websites should differentiate these counts, but have not, thus outside interpretation by a lay audience of these raw numbers would of course be meaningless. I am fairly certain on the daily updates from various states they have made clear of daily deaths vs deaths accounted for that occurred previously without a known date.