In DCE_comment-tracking, there are comment anchors that appear in certain versions (tc, tcn, or tl) as recorded in columns D ("TC"), E ("TCN"), and F ("TL").
Column I ("comment-edit-notes") records which versions the comment SHOULD appear.
Steps:
confirm that the anchors actually appear in the version recorded in columns D, E, and F.
compare to column I, noting where anchors need to be added/removed
add/remove anchors
Working doc in GD: comments-in-use_20190908