Hi, @Richa Kumari
Thank you for posting in Microsoft Q&A forum.
If we have selected the option to Export all task sequence dependencies, the nested task sequence can be exported and imported at once. By default, the wizard scans for all the related objects and exports them with the task sequence. These dependencies include any for applications and child task sequences.
Have you checked your last thread that I suggested to remove the Software Update step to see if it helps?
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