We have an open issue with estimates when using Portfolio for JIRA.
The user enters ball park estimates at the Epic level, and later on breaks down the Epics into Stories and estimates the detailed stories.
The documentation of JPO says:
"Estimates can be made either on epic level (as long as the epic is still more of a placeholder and not yet broken down into individual user stories), or at the story level. Themes and initiatives cannot be estimated by themselves. If you start executing and create/import actual user stories under an epic, the estimate on the epic level gets replaced with the rolled up estimate from the story level, and progress is tracked relative to that, not relative to the original estimate made at the epic level. "
But that's not the functionality that we see in the product. We see that the Estimate of the Epic is left as-is, and the total estimate of the Epic is the estimate of the Epic plus the estimates of the child stories.
What is your best practice for using JIRA Portfolio correctly in that situation (which I think is not a rare one)? Should the users manually delete the estimate of the Epic once the child stories are created?