Hello @Suneet Patil , Thanks for using Microsoft Q&A Platform.
When you migrate your LUIS application to CLU, your LUIS applications and resources will not be affected. Migration will only copy the selected applications to CLU. There will be no data loss in LUIS end. Please refer to the Migration guide for more details: https://learn.microsoft.com/en-us/azure/cognitive-services/language-service/conversational-language-understanding/how-to/migrate-from-luis?tabs=luis-portal
Your existing LUIS applications will be available until October 1, 2025. After that, you will no longer be able to use those applications, the service endpoints will no longer function, and the applications will be permanently deleted.
I hope this helps.
Regards,
Vasavi
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