I have es-ES translations and I would like to leverage them and not re-translate es-419 from scratch. Is it possible?
Please note that different locales are treated as different languages in Transifex. So, you can achieve what you want by following one of the workarounds below:
#1: Once the translations of the es_ES language have been completed, you can download the TMX file from your project, edit it and replace es_ES with es_419. Then upload the TMX file back to your project.
or
#2: Once the translations of the es_ES language have been completed, you can download the translation file and upload it to the es_419 language of your project.