Hello,

I am afraid there is a mistake here.

The reason we did not have "name:fr"="Cortenbergh" before is not that we forgot, it is because the official name set by the government is to use "Kortenberg" both in Dutch and in French.

https://www.ejustice.just.fgov.be/eli/arrete/1988/06/24/1988000115/justel

If you really want to use the alternative form, please consider "alt_name:fr"