I’ll probably need to download them and update the translations file available to Inbound Pro users. I can have your changes in the next release.
Also if you notice, Inbound Pro comes with translations turned off by default because they are still being developed. If you go into wp-admin->Inbound Pro->Settings there will be a setting where you can enable them.
Try this. Open the file /wp-content/plugins/inbound-pro/inbound-pro.php and find the constant named INBOUND_PRO_TRANSLATIONS_VERSION and increment it’s value to 1.30.2. That will trigger the in-plugin translation file update and I updated our translations file yesterday so it should contain your work.