Contribution History not showing recent Contributions?

I am curious why the Contribution History no longer shows Contributions.  I had not contributed anything to IMDb since last year, but this past week I made a bunch of grammar/spelling corrections and they do not appear in my Contribution History in the Contributor Zone.  It still shows contributions from past years, though.  I received email confirmation for the recent corrections I made, and I can click to view the status from the email, but I like having an ongoing list of all of the contributions I have made.  The email address I received the confirmation at is the same email address that I use to log in to IMDb, so I didn't use a guest account or create a new account, etc.  Please let me know if anyone has any insights into this.  Thanks!