Moved Shift patterns to a 14 day life cycle and some tasks now moved too far ahead on the plan. The shift rotation cycle has been set back to 7 days but I still cannot drag tasks back to the correct date on the plan.
Cannot drag tasks to reschedule them, to the correct date.
Cannot drag tasks back from 17th June 2021 when earliest start date on task is June 8th 2021.
Solution 1
Please check if the relevant task(s) are locked by completing the following steps:
Double-click the relevant task from the Gantt Chart
On the left-hand pane, the edit tasks window will open. Check if the Locked checkbox is ticked
If it is, select the checkbox so that is empty
Click apply
NOTE: Predecessor or Successor tasks may need unlocking as well before the relevant task can be dragged. Right-click the task that needs dragging and select Edit Task Dependencies to find the Predecessor/Successor tasks
Solution 2
If the task is not locked, replan the tasks by completing the following steps:
Select the order planner
Select the relevant works orders
Right-click them and select delete
select delete all tasks for order(s)
Select the same works orders from the order planner and click Add To Plan
The tasks now plan to the correct date on the Gantt Chart
Solution 3
Check the works order being imported has the correct routing to plan the tasks.
Solution 4
A alternative solution is to tick allow task overlaps from the relevant resource you dragging the task in. If it is a machine resource, complete the following steps:-
Select resources
Select resources again
select offending resource
click edit
tick allow task overlaps
click OK
Solution 5
Another cause of this issue is that the offending task has multiple resources added to it and one of these resources is at full capacity, so, that resource will not accept any more tasks.