I've been tracking the Pima Co. reported cases closely for a while, and today all of the numbers going back to 3/15 changed. Since they were reported by date of sample collection, this should not have been possible. As an example, May 30th used to show 135 new cases tested on that day. However now it shows only 62, a change of -77. Those cases (along with many others from the last week of May) seem to have been moved to 6/4, which went from 94 cases to 214. The number of tests reported per day has not changed.
What happened to the way the data is reported to cause this change?