That depends on how you define "start date".
The "created" date in Jira cannot be altered via the UI if you're using that, but if you are importing data from another system, most of the importers will let you set it.
If you're using a custom date field, then yes, you can edit that any time.
If it's a derived field of some sort, then you'd need to look at the data behind it.
In the past, Portfolio for Jira required a high degree of detail–foresight that was unrealistic for many businesses to have–in order to produce a reliable long-term roadmap. We're tur...
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