What are partial rollups in your plan?
This page refers to the advanced planning features that are only available as part of Jira Cloud Premium and Enterprise.
If your schedule bars have a striped pattern that fades out in one direction, this indicates that a parent work item is using one set date and one date rolled-up from child work items. This is called a partial roll-up, and is demonstrated below:
If a parent work item’s schedule bar fades out completely, it means that one date can’t be inferred since a child work item doesn't have a start and end date assigned to them. Missing start or end dates prevent your plan from determining a roll-up date, and so the schedule bar fades out.
To fix a partial roll-up, ensure that all child work items have start and end dates.
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