New Post: Citation and Bibliography editing

In your format string, you have:

{%Author:1|Editor:1|Title%}

the 1 points towards the namelist formatting being used. So look for the 'namelists' element and then for the 'list' with the id equal to 1.

In it you will find the format string for the "first_person" and "other_persons". There will be a ":u" indicating that the name should be in uppercase. Remove it.

For a bunch of example format strings, see the documentation.