Brendon: I checked your page on the IMDbPro site and found the same situation that you did. This is because IMDb has more than one version of its database active at any given time. The version used in "edit" mode is not always identical to the version used in "display" mode.
However, when this happens, the "edit" version usually catches up to the "display" version within 48 hours.
So I recommend trying again in 2 days. If it still only brings up one of the two talent agencies at that time, please post here again and provide full details.