Unable to search by Person Number on Seniority Date Redwood page

Not sure if this is by design or not, but I'm seeing it on a few Redwood pages. It looks like for Seniority Dates, specifically, I can only use a name or assignment number to search, not a person number? Does anyone know if there is any way around this? This is an unfortunate loss moving from RUI as most employees use the person # to search rather than a name.