I'm trying to do a bulk csv upload of a custom field on sub task issues and the fail with error
ERROR - Unexpected failure occurred. Importer will stop immediately. Data may be in an unstable state: Failed to remove subtasks [CARS-532] parents. A parent of a subtask cannot be removed.
The input csv file contains three fields issue Key, Summary, Custom field and looks like this
Summary,Issue key,Custom field (SP Name)
"Record, xxxxx- SP",CARS-532,xxxxx_CRYSTAL_10
Import is done through admin external data import and the tree fields are mapped accordingly.
The record to be updated does not have any subtasks.
I'm really baffled, any thoughts? I have about 150 to update, so would rather not do them manually.
