With this file you can import this into a new installation. It isn’t possible to selective import only some parts of the data, it is only designed as a backup in case you need to restore everything.
The other option, is to export all Clients / Products / Invoices and then import those using the csv import/export function .
Hello, I imported the zip file in a new installation, the file was well taken into account in the new installation, but I still can’t see the pdf files correctly