@Edwin Sanchez, Thanks for posting in Q&A. To migrate Intune from tenant to tenant, you can export and import some of your policies using Microsoft Graph and Windows PowerShell. Unenroll the device in the previous tenant and enroll into the new tenant (Remove Autopilot device if we have).
For the policy migrate, there are some policy types that can't be exported or imported. You can read the following link to get more information:
Hope the above information can help.
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