How to create one uMap map for multiple languages?

At our small nonprofit, we’re trying to use uMap to show our afforestation sites on our website. Our site supports two languages (German & English). The map shows data for each site that is visible as a polygon. To avoid providing the data and polygons for each language, we’ve done the following:

  1. Create one map on uMap for each language
  2. Add the polygons and data for each site
  3. Create a template that formats the data for all popups
  4. Export the map, import it into the map for the other language
  5. Change the template for that language

Here’s what that looks like on our website and on uMap: English, German.

It works, but we’re running into some issues:

  1. When importing the map from the original language, the second language’s title, description and templates are replaced. Is it possible to import only one layer?
  2. The whole workflow is a bit cumbersome and prone to errors. Do you know a better approach?
  3. Not sure if this has anything to do with the approach, but when today I added a pin, three others disappeared for no apparent reason. My coworker had a similar problem, where polygons disappeared when she added a new one. Is this a known issue, or just some fluke?

Thanks for this info.