— I'm trying to turn https://www.mindat.org/loc-260052.html into a sublocality of https://www.mindat.org/loc-260033.html, but I'm getting an error saying I should add a new locality - I don't want to, because both localities already exist.

— I suggest that someone with more knowledge of the region have a look at the Panasqueira Mines ( https://www.mindat.org/loc-2591.html ).
According to the locality description, the concession covers several parishes and even several municipalities.
Yet, currently, the locality string mentions a single parish within a single municipality.
This appears to be incorrect.

Thanks,