JabRef 4.3.1, linux imports a microsoft word "BookSection" as "Book".

@Book{Klo18,
  author     = {Klopsch, Britta and Sliwka, Anne and Maksimovic, Aleksandra},
  title      = {Familie als Sozialisationsinstanz},
  year       = {2018},
  publisher  = {UTB},
  location   = {Regensburg},
  pages      = {375},
  bookauthor = {Gogolin, Ingrid and Georgi, Viola and Krüger-Potratz, Marianne and Lengyel, Drorit and Sandfuchs, Uwe},
  booktitle  = {Handbuch Interkulturelle Pädagogik},
}

when connecting to libreoffice 6.3.4 it ends up with:

Klopsch, B., Sliwka, A. & Maksimovic, A. (2018). Familie als Sozialisationsinstanz. Regensburg: UTB.

the "in" section seems to be missing in the default style to make it like this:

Klopsch, B., Sliwka, A., & Maksimovic, A. (2018). Familie als Sozialisationsinstanz. In I. Gogolin, V. Georgi, M. Krüger-Potratz, D. Lengyel, & U. Sandfuchs, Handbuch Interkulturelle Pädagogik (S. 375). Regensburg: UTB.

then i changed it to "inBook" - but still it is not doing as expected, there is a:

inbook=\format[Authors(LastFirst,Semicolon)]{\author} (\year\uniq). \chapter. In: \format[AuthorLastFirst,AuthorAbbreviator,AuthorAndsReplacer]{\editor} (Ed.), \title, \publisher.