I think there was a problem with this changeset: https://www.openhistoricalmap.org/changeset/211317.

All multilinestrings that pass through ways created in this changeset don't render

Hi again. If you want to track the progress about the issue. You can see it here: https://github.com/OpenHistoricalMap/issues/issues/1154

Hello.
I'm aware that these railways won't load in the proper layers on the railway map. However my main focus is to get it rendered on https://openrailwaymap.app/#view=5/53.16/18.12&date=2012. Here you can only see railways with usage tags.
I'm gonna report the issue with the railway rendering because that's obviously an issue.
Thanks for reaching out

Hi. I noticed that the start_date of 1814 uses the German-Danish border of 1920. I think you should look in to it. Thanks. :)