My translation are gone

Hi

I translated a lot of Learningpress using Loco Translate. It seems that my work is lost and the site has returned to its state before I have translated anything. Some words are still in german but a lot are changed back in english.

I had turned on the automatic update. Is it the case that the language file is overwritten with every update? Is there an update of my work somewhere?

Thanks for your help.

Greetings Daniel