@Wilkins Wong - Thanks for the question and using MS Q&A platform.
I had already addressed in your previous thread: https://video2.skills-academy.com/en-us/answers/questions/1691612/microsoft-purview-import-glossaries-in-new-microso
Currently, Import a Business Glossary is not available in the Microsoft Purview portal (preview). It's recommended to use the import a Business Glossary in Classic Purview Portal untill we complete migration experience from the classic to the new portal. Here is the update from internal team: Bulk upload capability as well as importing current terms in Business Glossary in new Microsoft Purview portal will be coming shortly. We don't have ETA and I will be updated this thread once it's available.
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