GP payroll issues, too many entries for one person?

[firemedicandy]

We are using GP for payroll and running into some weird issues. We are a fire department, so our hours change from pay period to pay period (our week is basically 6 days instead of 7). We average our hours over 24 pay periods and it comes out to 109.67 hours of regular pay. So we limit the total hours a person can get paid for per-period to that. We import our pay records from Telestaff as separate line items. So a person who works six 24 hour shifts in a period will have 6 entries of 24 hours. We have set up GP to limit the total hours to 109.67. It processes the first 5 entries (which totals 120 hours and hits the 109.67 limit) and it is fine. But when it hits the 6th entry it adds the last 24 on for a total of 133.67. Any idea why it would only apply our HOURS limit when it first hits that limit and not after? We are looking at sub-totaling all our pay codes before importing batches into GP but would like to solve the issue in GP if possible.

I am an IT person, not a payroll person so many of the business concepts of payroll systems are foreign to me.