Hello Javier, as Helge already wrote, manpages-es-extra is far too outdated to worth shipping it in Bullseye. It is *now* the time to get rid of this package.
Tomorrow we will release a new version of manpages-l10n, which will contain Spanish translations for the first time, after manpages-es vanished from Debian (for good reasons). I'm almost finished with the import of the plain text translations from manpages-es-extra, so I think the .po files will be available for translators a few days after the upcoming release. This means in return: Because manpages-l10n doesn't distinguish between »es« and »es-extra« files, the release in march will include the newly imported .po files – and raise file conflicts. I think you agree with me that it's better to have 100 .po files (at least 80% translated) which are up-to-date than 200 terribly outdated plain text translations which nobody benefits of. Best Regards, Mario