https://github.com/wikimedia/mediawiki-extensions-WikimediaMessages/blob/e5667e5/WikimediaMessages.hooks.php#L25-L47
```
static $keys = [
'acct_creation_throttle_hit',
'centralauth-contribs-locked',
'centralauth-uwbr-intro',
'centralauth-uwbr-registration-nodate',
'createacct-helpusername',
'createacct-imgcaptcha-help',
'delete-toobig', // T139797
'feedback-termsofuse',
'flow-terms-of-use-new-topic',
'flow-terms-of-use-reply',
'flow-terms-of-use-edit',
'flow-terms-of-use-summarize',
'flow-terms-of-use-lock-topic',
'flow-terms-of-use-unlock-topic',
'globalrenamequeue-email-body-approved',
'globalrenamequeue-email-body-rejected',
'mwoauthserver-invalid-user',
'privacypage',
'sidebar',
'sulrenamewarning-usenew',
'ipb-confirmhideuser', // T121639
];
```
Are all messages that are overridden for WMF usage.
But https://github.com/wikimedia/mediawiki-extensions-WikimediaMessages/blob/bd14e64/i18n/wikimediaoverrides/en.jsononly contains 4 entries, but the array above contains 22
At least some of them are in https://github.com/wikimedia/mediawiki-extensions-WikimediaMessages/blob/9a9cf28/i18n/wikimedia/en.json and they should be moved to the override files
I believe, if the en and possibly the qqq are moved, the next translatewiki export should move the translations
7 of them were at https://github.com/wikimedia/mediawiki-extensions-WikimediaMessages/blob/d7b5f70/i18n/wikimedia/en.json#L243-L249