Using Web Config or other tools, you can back up and import contacts.
For Web Config, you can back up contacts by exporting the printer settings that include contacts. The exported file cannot be edited because it is exported as a binary file.
When importing the printer settings to the printer, contacts are overwritten.
For Epson Device Admin, only contacts can be exported from the device’s property screen. Also, if you do not export the security-related items, you can edit the exported contacts and import them because this can be saved as a SYLK file or csv file.