No.
You have to save the configuration in the old box. Either locally or in Kundencenter.
When you connect the new box, things like WiFi settings, telephones, WiFi boxes are taken over. Device names, port forwardings, VPN are not automatically restored. Simply after the new box lights up continuously white again, import the config file locally or import it from the Kundencenter. After that everything is as before.
[https://www.swisscom.ch/de/privatkunden/hilfe/geraet/internet/internetbox5pro.html#acc-aujZhA%5Bselected%5D%5B%5D=4] (https://www.swisscom.ch/de/privatkunden/hilfe/geraet/internet/internetbox5pro.html#acc-aujZhA%5Bselected%5D%5B%5D=4)
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