New prompt in service upgrade.exe prevents automatic execution

With version 10.2.9. the following prompt appears every time when running upgrade.exe:

"Note: Customer center templates will be migrated from disk to the database. If you have customized templates in a backup folder, restore now before continuing. [ok]:"

Due this prompt asking for user input you can't automate the process by passing in a config-file (-config-file option), passing the option -noconfirm also doesn't skip this prompt.

Is there a other (not documented) command line flag or answer key in the config-file option pass to this prompt without manual user input?