Adding Decision records to a Project/Demand makes the planned start and end dates Read OnlyDescriptionWhen a Decision related list record is created for a project, the project considers this as one of its child tasks. Thus, planned duration/end date calculation are rolled up for this record, disabling the ability to modify the dates on the project. The Decision record has its own planned dates (which seem to always default to 1 and cannot be modified), but modifying any of these dates do not reflect to its parent record, which is the project itself.Steps to Reproduce Activate project management and demand management plugins if not alreadyCreate a new project with no other children tasks, notice that the planned duration (which affect the planned end date) can still be modifiedPersonalize the form to include the related list 'Decision->Parent' and create a new Decision record on thatThe decision record has its own planned dates. Try changing the planned duration Current behavior: Planned end date of the decision doesn't change and thus the planned end date of the project did not get this rolled-up calculationExpected behavior: Decision records should not make the planned start and end dates on the parent form Read Only.WorkaroundThis problem has been fixed. If you are able to upgrade, review the Fixed In section to determine the latest version with a permanent fix your instance can be upgraded to.Related Problem: PRB1555935