I am doing a migration from Assembla to Jira.
In Assembla we have sub-task #50 linked to parent task #90. Transition of #50 to sub-task type might happened after creation of Task #90.
Now I am facing issue while importing tickets in to Jira, I can not creat sub-task before its parent ticket.
Possible solution I am seeing like - create #50 with task type and later on change its type to sub-task and associate/link with parent.
If any other option/way that could handle this situation easily without making so many efforts.