The MATCH_P6_LABOR_HOURS option on the Preferences dialog box in Open Plan allows you to use the resource assignment level as hours regardless of Open Plan's default duration unit when importing/exporting data to/from Primavera P6.
If MATCH_P6_LABOR_HOURS is set to 1 (or not defined), Open Plan treats P6 resource labor hours as Total Hours. When you import a P6 schedule with labor resources, the Open Plan schedule uses the same resource units assigned to its activities. This is the default setting.
This setting affects the planned and remaining units for import as well as the remaining and actual units for export. When you import/export resources, a message displays in the log specifying whether or not Open Plan is matching P6 labor hours. The message varies for import and export.
In Open Plan, the planned/budget units are referred to as Total Levels.
If MATCH_P6_LABOR_HOURS is set to 0, Open Plan adjusts the P6 resource labor hours to reflect its default duration unit.
Since Open Plan still interprets resource units internally in terms of the default duration unit, resource costs on the Activity Progress dialog box may not match costs in P6 unless the Open Plan default duration unit is in hours (when MATCH_P6_LABOR_HOURS = 1).