Or, who knows, the Essex Rapidplay results may go into the January list. I don't know why David should have assumed they wouldn't.
David's "gradesheet" was a list of all his results reported so far this season, Rapidplay in this case, as sent to all (emailable) ECF Direct Members shortly before publication of a new grading list so they can check it. There are always some errors, and the ECF will verify and correct them if you point them out.
But note the "so far". This particular list was sent ten days ago, and did not purport to be final. Results were still coming in. They still are. The January list isn't closed yet. It will be closed when it appears, more than a week from now. Only after that will late results be carried forward to the July list.
You are, of course, acquainted with the ECF's list of "Results Received for Grading". See the website's Grading page if not. It is kept up to date and will always tell you what has been reported so far. Perhaps the Essex Rapidplay is in by now. No? Try tomorrow.
Grading Administrator, ECF