How do you convert an existing issueType to Sub Task IssueType

[Sri Vulli]

We have IssueType A, IssueType B, IssueType C, and Sub Task in Jira.

Team would like to create issues of IssueType C as sub tasks/child tasks of IssueType A and IssueType B.

Did anyone every convert the an actual issueType as a sub Task issueType?

Thanks

[Nic Brough -Adaptavist- · Accepted solution]

There is no way to convert an existing type globally.

You will need to add a new sub-task type, then convert each issue of type C to it, giving each issue its new parent as you go.  Then you can remove type C.

[Sri Vulli]

Thanks Nic. I found this while searching the site

UPDATE jiraschema.issuetype SET pstyle='jira_subtask' where pname='IssueType A'

Do you think it will work? I need to try it out on a testing environment

[Nic Brough -Adaptavist-]

NO!

You'll break your Jira if you do that.

You MUST use the UI to change the type between issue and sub-task.  Unless you want to also work out what to do with the parent linkage and do that as well.  And be off-line while you do it.  And re-index when it's done.

[Sri Vulli]

Thank you Nic.

I will follow your suggestion