Day Quantity fields in a multi-session per day environment

Imported from previous forum

[ original email was from Jim Northey - jnorthey@lasalletech.com ]
In an environment where there are multiple trading sessions per day (morning, regular, evening), should the DayAvgPx, DayCumQty, DayLvsQty be treated as "Session quantities"?

It seems as though these quantities should be re-initialized during end of session processing for each session - since the values were added to report activity during the day’s trading.

Any thoughts or recommendations on what should be done as we move into multiple trading session environments?