Using HERE Public Transit API V3 for searching stations with name and radius, I get up to 25 stations with the following query:
https://transit.ls.hereapi.com/v3/stations/by_name.json?
center=50.7374,7.0982&name=berlin&max=25&radius=90000000&apiKey={YOUR_API_KEY}
Converting the same query to HERE Public Transit API V8(next line) does not deliver any stations.
https://transit.hereapi.com/v8/stations?
in=50.7374,7.0982&name=berlin&r=90000000&maxPlaces=25&apiKey={YOUR_API_KEY}
In the migration document, there is no information regarding this matter. It is only mentioned that some of the results' parameters are removed but not the results themselves.