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P3 keeps changing dates when I don’t want it to

Mike MillerMember for 16 years 5 months
Created
9
4
0
P3 keeps moving dates when I don’t want it to, and it creating random lag times that I don’t know how it’s coming up with the dates. Please see the pic of the tasks circled in green... these are the tasks that P3 keeps changing. Even when a task is a milestone with a date I set, P3 will change it when I hit schedule. What am I doing wrong that P3 is making all these random lag times? Pic 1 is how it looks after I hit schedule and Pic is 2 is how looks before I hit schedule.

Pic 1

Pic 2

9 replies

Oldest first
  1. 0
    Paul Harris ·
    Pic2 does not work.
  2. 0
    Mike Miller ·
  3. 0
    Mike Miller ·
    Is it not possible to edit posts?
  4. 0
    Rodel Marasigan ·
    Mike,
    Can you check Tools-> Schedule or (F9)-> Option if level automatically is selected? It should be Off
  5. 0
    Mike Miller ·
    I don’t think I have "level automatically".. you can take a look in the screen shot. I made a simplified example, except in this example it created extra lead time and before it was creating lag time. In the new sample I want the project to end on Aprl 16, but you can see P3 creates lag time out til June 10 and I don’t know why??

    New Sample


    Does this forum have no option to upload photos?
  6. 0
    Rodel Marasigan ·
    Mike,
    Can you check File-> Project Information if you have Project must finish date define? It seems always finishing somewhere in Jun.
  7. 0
    Mike Miller ·
    Yeah you’re right, it’s because that’s the Project’s finish date... I guess that wasn’t a good example. I give up on this useless program... I can make a better schedule with Paint
  8. 0
    Marian Anyameluhor ·
    Hi Mike,

    I suffered a similar issue to the dates moving here are some of the things that resolved it.

    don’t forget to contrain the date!
    if you are scheduling from a particular date and it is not constrained it will simply start the activity at the earliest possible time hence it moves it back to the data date

    if it is being driven by another activity that finishes late this will push it out everytime you hit F9 so double check your predecessors.

    I also found that if i was trying to replicate an MS project into P3, MSP allows activities to finish and start on the same day however if P3 is set to schedule in units of a day it will always start thefollowing activity the next day therefore pushing everything out.

    Persevere hope it helps.
  9. 0
    Mike Miller ·
    Thanks for your help.. This program annoys me because it’s the first program I’ve ever used that I couldn’t just figure out how to use it on my own.

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