Hello Rakesh Kumar,
Thank you for posting in Q&A forum.
I'm glad I can answer this question for you and hopefully it will be helpful.
For migrating users and computers in a cross-forest scenario while maintaining password synchronization, you can consider using the Microsoft Active Directory Migration Tool (ADMT). ADMT is a free tool provided by Microsoft that enables you to migrate objects between Active Directory domains and forests.
ADMT supports password migration options, including password sync, which allows users to continue using their existing passwords in the target forest/domain. This feature helps minimize disruption and ensures a smoother transition for users during the migration process.
You can download the Microsoft Active Directory Migration Tool from the Microsoft Download Center. Here is the link: https://www.microsoft.com/en-us/download/details.aspx?id=56570
Hope the information above is helpful.
If you have any question or concern, please feel free to let us know.
Best Regards,
Daisy Zhou
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