Dnyaneshwaree
Mega Sage

Hello @KM SN ,

Check that there is no issues occured during/for parent import completion or no things remaing to add for child import.
Please refer below articles if relatable:
https://www.servicenow.com/community/developer-forum/scheduled-import-quot-run-after-parent-quot-wit...
https://www.servicenow.com/community/developer-forum/imported-project-tasks-not-closing-when-childre...


Please accept my solution if it works for you and thumps up to mark it as helpful.
Thank you!!

Dnyaneshwaree Satpute
Tera Guru