Project template does not work in new version of Trados


I have an issue with a template that was created for XML files. A template was created in an older version of Trados (2017), in which it was defined which elements of the XML need to be imported as segments for translations, which need to be imported, but locked etc. When we updated to the newer version of Trados (2021, the template no longer works. The segments are imported correctly as far as I can see, but nothing is locked as it should be. Since the template was created by someone else, I don't know which settings were used so I can create a new one in the new version of Trados. Is there a way for me to see the settings in the project template so I can create another one from scratch in the new Trados? The only option I have seen is to update an existing template, but this won't help as it does not work correctly in Trados 2021.

Thank you in advance for your help.