Analysis of DeadOccur (Task Recurrence)

[jobisoft]

From @jobisoft on April 5, 2018 21:33

Exchange 2010 is not showing the full series, only the next task, which has not been completed
If a task gets completed, it gets added as a new entry with a DeadOccur=1 with its own StartDate/DueDate but the StartDate set to the start of the series.

Creating a series with 10 occurences:

 Add => 
     ServerId = [1:7]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Importance = [1]
      UtcStartDate = [2018-01-31T23:00:00.000Z]
      StartDate = [2018-02-01T00:00:00.000Z]
      UtcDueDate = [2018-01-31T23:00:00.000Z]
      DueDate = [2018-02-01T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [0]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [10]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [0]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Add <= 

Completing the first:

    Add => 
     ServerId = [1:8]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Importance = [1]
      UtcStartDate = [2018-01-31T23:00:00.000Z]
      StartDate = [2018-02-01T00:00:00.000Z]
      UtcDueDate = [2018-01-31T23:00:00.000Z]
      DueDate = [2018-02-01T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [1]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [10]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [1]
      DateCompleted = [2018-04-04T22:00:00.000Z]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Add <= 
    Change => 
     ServerId = [1:7]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Importance = [1]
      UtcStartDate = [2018-02-07T23:00:00.000Z]
      StartDate = [2018-02-08T00:00:00.000Z]
      UtcDueDate = [2018-02-07T23:00:00.000Z]
      DueDate = [2018-02-08T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [0]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [9]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [0]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Change <= 

Completing the second:

        Add => 
     ServerId = [1:9]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Importance = [1]
      UtcStartDate = [2018-02-07T23:00:00.000Z]
      StartDate = [2018-02-08T00:00:00.000Z]
      UtcDueDate = [2018-02-07T23:00:00.000Z]
      DueDate = [2018-02-08T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [1]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [9]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [1]
      DateCompleted = [2018-04-04T22:00:00.000Z]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Add <= 
    Change => 
     ServerId = [1:7]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Importance = [1]
      UtcStartDate = [2018-02-14T23:00:00.000Z]
      StartDate = [2018-02-15T00:00:00.000Z]
      UtcDueDate = [2018-02-14T23:00:00.000Z]
      DueDate = [2018-02-15T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [0]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [8]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [0]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Change <= 

Just changing the subject of the series (will not change the subject of completed entries):

    Change => 
     ServerId = [1:7]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Subject = [juhu]
      Importance = [1]
      UtcStartDate = [2018-02-14T23:00:00.000Z]
      StartDate = [2018-02-15T00:00:00.000Z]
      UtcDueDate = [2018-02-14T23:00:00.000Z]
      DueDate = [2018-02-15T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [0]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [8]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [0]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Change <= 
    

Completing the third:

        Add => 
     ServerId = [1:10]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Subject = [juhu]
      Importance = [1]
      UtcStartDate = [2018-02-14T23:00:00.000Z]
      StartDate = [2018-02-15T00:00:00.000Z]
      UtcDueDate = [2018-02-14T23:00:00.000Z]
      DueDate = [2018-02-15T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [1]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [8]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [1]
      DateCompleted = [2018-04-04T22:00:00.000Z]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Add <= 
    Change => 
     ServerId = [1:7]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Subject = [juhu]
      Importance = [1]
      UtcStartDate = [2018-02-21T23:00:00.000Z]
      StartDate = [2018-02-22T00:00:00.000Z]
      UtcDueDate = [2018-02-21T23:00:00.000Z]
      DueDate = [2018-02-22T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [0]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [7]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [0]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Change <= 

Unticking the complete flag of the second occurence:

    Change => 
     ServerId = [1:9]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Importance = [1]
      UtcStartDate = [2018-02-07T23:00:00.000Z]
      StartDate = [2018-02-08T00:00:00.000Z]
      UtcDueDate = [2018-02-07T23:00:00.000Z]
      DueDate = [2018-02-08T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [1]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [9]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [0]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Change <= 

Copied from original issue: jobisoft/TbSync#63

[jobisoft]

Removing the element at 22.02.2018 (the next without complete) will just shift the remaining series by 1 week (still honor the 10 occurences):

    Change => 
     ServerId = [1:7]
     ApplicationData => 
      Body => 
       Type = [1]
       EstimatedDataSize = [0]
      Body <= 
      Subject = [juhu]
      Importance = [1]
      UtcStartDate = [2018-02-28T23:00:00.000Z]
      StartDate = [2018-03-01T00:00:00.000Z]
      UtcDueDate = [2018-02-28T23:00:00.000Z]
      DueDate = [2018-03-01T00:00:00.000Z]
      Recurrence => 
       Regenerate = [0]
       DeadOccur = [0]
       Type = [1]
       Start = [2018-02-01T00:00:00.000Z]
       Occurrences = [7]
       Interval = [1]
       DayOfWeek = [16]
      Recurrence <= 
      Complete = [0]
      Sensitivity = [0]
      ReminderSet = [0]
     ApplicationData <= 
    Change <= 

[jobisoft]

A delete of a completed element just deletes that element. Even if the first element is removed, the Start value of the series does not change.