Labor Entry posting for the entire shift

SUGGESTED

We have an issue with a product line, and we can't seem to correct it.

On 90% of our routings for manufactured products, when we do a Labor Entry it calculates Overhead and Fixed costs using the pieces per hour and work center rates.

One one product line it bypasses pieces per hour and work center rates, and posts Overhead and Fixed costs based on how many hours were entered on the Labor Entry Screen.

We can't find the setting to make these routings behave like all the others. Suggestions please?