How keep translations every update?

Hi there

I wonder how i can use loco translate in a scalable way, i have had issues with updating plugins, and themes, leading to loss or overriding translation strings.

This causes me to have to retranslate strings again and again.

What is the solution here?
How can I easily translate it once, and save it in an effective manner to then make sure i keep the translations for every upcoming update?

Thanks alot!

The page I need help with: [log in to see the link]