Strange.. You should have the number of hands higher when you set historical stats.
“Historical stats” will show you the stats you have on that opponent right now.
“Stats up to current hand” will show you the stat you and opponent have when you were playing that hand.
The HUD stat in replayer also depends on the filter you set in the HUD profile you have on your replayer. It automatically separates holdem and omaha but for game type and player number, you can change it in HUD settings at HUD tab.