Temporary SIM change and Whatsapp behaviour

Hi all,
I'm asking a question that is probably a FAQ, but for which I have found dozens of different answer. The fact is this: I'm going on holidays and I have planned to take a local sim in the country I visit. When I put the new SIM inside the phone, how does whatsapp will see it? I know that whatsapp verify the phone number the first time, so I do not know if it will recognize the new SIM asking me to validate the number again or it will be totally transparent for me and for my contacts.

Thanks
Ste


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