FS relationship does not push successor task's start date

[Mauricio I]

Hello MS project community,

I have a strange issue with a simple project network:

Task A 10 days duration, and task b 5 days duration with task A as
successor FS+0d. The issue happens when I increase task A duration, for
instance to 11 days: the gantt chart view for task b switches to a split task
view (dotted lines) and task b still starts on day 11. I was expecting when
increasing task A duration for Task b to start on day 12. On a fresh .mpp
file the behavior is the expected.

Is this a corrupted file?

 

[JulieS]

Hello Mauricio I,

Is task A the predecessor or successor to task B? From your
sentence

Task A 10 days duration, and task b 5 days duration with task A
as
successor FS+0d

it appears than A is the successor to b. If so, changing the
duration of the successor task (task A) will have no effect on the
predecessor task (task b).

If task A is the predecessor to task B, the split in the successor
can be caused by the following: You have progress recorded on the
successor task (Task B) and then you record progress on Task A and
increase remaining duration. Because of the option "Split
in-progress tasks" in Tools > Options, Schedule tab, when you enter
actual work or actual duration on a successor, the remaining
duration or remaining work is split and scheduled according to the F
to S relationship. The part of task B on day 11 is "stuck" to day
11 due to an actual start date. Double click on task b and set the
percent complete to zero which will remove the actual start date and
will move the start of B to the correct date/time - the finish of A.

I hope this helps. Let us know how you get along.

Julie
Project MVP

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