How can I search the Knowledge Documents for words with German Umlauts?
To be able to use German Umlauts (ä,ö,ü,ß) in Knowledge Search,
these characters need to be added to the 'Valid Character Range'.
Go to 'Knowledge -> Search -> Parse Settings'
and add ä,ö,ü,ß to the range:
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After this change, it's required to run pdm_k_reindex