Hello KEERTHANA JAYADEVAN,
Welcome to the Microsoft Q&A forum.
For your question "when we restart the process again, will it start from the beginning or resume from where it stopped"
The process will start from the beginning.
Reason:
When you stop the migration using the "Stop Migration" button, All data that has been migrated will be deleted from the Gen 2 account. If you choose to migrate again, you will need to restart the process.
I hope this helps.
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