Two user accounts were merged in the AdminCP, because they belonged to the same person. (let's call them Member 1, Member 2 for example). Member 1 remains; Member 2 is deleted by the merge. Following this action, on the User Profile for Member 1, Postings Tab, link "Find all content by Member 1" the resultant list does NOT include content posted originally by Member 2. In the forum itself, an affected post DOES correctly show the Member 1 as the author.