Projects completed on time measure

[FredrikT]

KB0715293 https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB0715293

mentions "Once the Project or at least one Task under it moves to Work In Progress, the Original Dates are frozen"

however we find that our instance (and PDIs) do not behave this way. Instead the original end date and planned end dates keep moving out as project tasks are created or adjusted with dates further out regardless of the state or phase of the project or the state of any related project tasks. This makes it difficult to measure projects completed on time.

We did find a business rule "Update Planned Date from Current" that references a property "com.snc.project.sync_original_dates_with_planned_dates" whose description is "Always sync original dates with planned dates in project" however not sure of all the implications of changing this property and if it supports freezing the Original dates once the project has started.

Thanks!

[FredrikT]

Update:  We did follow KB1504458 https://support.servicenow.com/kb?id=kb_article_view&sysparm_article=KB1504458

setting the property to false but received the same results where original dates keep changing.

[FredrikT]

So I opened a case on this topic and turns out the product is working as designed.  The Original dates are only frozen once the Project starts (moves to WIP state when a child Project Task moves to WIP) if an existing child Project Task, that is in WIP, has their end date moved out further out than the current Original/Planned end dates. 

If any new Project Tasks are created with dates further out the Planned dates AND Original dates still change.  We also found it a little suspect that the dates with "original" in the label have column names of "scheduled".    Our solution at this point is to create new custom date fields that are read only and are populated via a business rule with the current Planned dates as soon as the Project starts so that we can get an accurate measure for projects completed on time.