I submitted a bunch of real credits to John Blusher's IMDb Page yesterday, but when i submitted a new director credit for "Snow Monster (2016)" to his page, all his other credits disappeared! John is a friend of mine and the credits were real.
If the work you added was "uncredited" (his name did not appear in the on screen credits), it could be that they were accepted and added, but then suppressed. IMDb policy states that they will not list "uncredited" work only and at least one "credited" entry must be present. So, if/when the director credit is added, the others might re-appear.
If you post the submission Reference Number(s) assigned when you added the others, staff here can take a look at the submissions and advise you from there. Otherwise it's all guesswork.
Submission Reference Numbers are 18-digit numbers and are included in the email receipt you should have received or in your account's View your contributions page.