Language variants in project termbases

Hello everyone,

When exporting a project termbase as part of export kit generation in WorldServer, is there anyway to export based only on the main language code? We have a termbase with EN-US, DE-DE and EN-ES. The EN-ES terms may still be helpful for translators working in other variants of Spanish. But if the project source language is not EN-ES, no Spanish terms are exported. Is there a setting or configuration file entry somewhere that would allow variants of the main languages to also be picked up?

Thanks in advance!