When translating Endloskassette from German into English. The article contains references with the Literatur template. This template is equivalent to Cite book according to Wikidata, and both templates seem to have templateData information.
Unlike templates lacking templateData (T203160), these templates are expected to be properly mapped. The original issue was reported in this comment and required the reporter to fix the references manually to avoid the list to of references to be full of errors:
Details of the problem
When a paragraph containing the /Literatur/ template is added to the English translation in Content Translation version 2, the reference card shows the reference information making the translator believe that it was properly adapted, but when the reference is inspected the parameters are shown as empty. As result, when the translation is published, the reference is published with an empty template.
The screenshots below capture the issue in these different steps:
1. Template seems properly adapted when it is added to the translation paragraph:
2. Template parameters are empty when inspected:
3. Template is empty when published: