I have had this problem myself, and usually find I have unmatched reference tags. Normally, under the Explain your changes box, there will be a grey error box that says... "There are unmatched reference tags..."
Looking at the changes tab, your Edits are all there, but it looks like an inline source needs </ref> after the entry. The proper tag, <ref> is at the beginning, but </ref> is missing at the end of the citation. This throws everything after that entry off... Go back in as if to edit, add the missing </ref> and you will see the Research Notes and the Sources.
The problem is here: "1809" Commonwealth v. Frost<ref>Commonwealth v. Frost, No. 5 Mass. 53 (Massachusetts Supreme Judicial Court March 1809). (OOPS! Missing </ref>)