Diagnosis
You have changed the period in the detail area without making changesin an input field. If you have shortened the period (that is, if youhave entered a later start date or earlier end date), no change will bemade to the data displayed. In this way, unnecessary data records areavoided.
When the period is next calculated, the old data is referenced, thatis, the old period is recreated.
If you, on the other hand, extend a period, all data within thevalidity of the period is also extended. When the period isrecalculated, the changes are made.
If you change periods and input fields at the same time, data is alwayschanged.

Procedure
Change or delete at least one input field if you are shorteningperiods.