Transfer of business visa into new passport

Hi

I have a one month business visa that I need to transfer form old to new passport.

Can I do it at the immigration office at Nguyen Du? Or do I need to go to the airport?

I have read here someone said that business visas can't be transferred:does anyone has any information on this please?

Thanks

https://www.expat.com/forum/viewtopic.php?id=792374

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