Previous amounts and missing amounts occur only during incremental allocation runs, and are significant only for the second and subsequent run in the same run period. Full allocation runs do not have or use previous or missing amounts.

Previous amounts are those amounts that have been allocated in a previous run. For the second and subsequent runs for the same time period, the rule allocates only differences from the previous run or additional expenditures.

Missing amounts occur when a source, target or offset project or task has been closed or has become inactive since the previous allocation run. During subsequent runs, the system tracks the missing amounts, so that the source, target or offset amounts will be accurate. Source amounts may be missing because:

• The task is closed, perhaps because the task has been completed

• The source line on which a task appears has been excluded (by selecting the Exclude check box for that line on the Sources window)

• An attribute, such as the service type or task organization, has changed