List of steps to reproduce (step by step, including full links if applicable):

• create CSV File with "Free Text" column (Freitext in German) containing [[Category:EXAMPLE]]
• Import pages by csv file on Special:Import CSV
• select "Overwrite only fields contained in the file"

What happens?:

• Instead of getting Categories at the end of the page, dummyLink0 appears for each category.
• Some properties that shoud not be affected by CSV-import get changed / loose data.

What should have happened instead?:

• Category tags appear at the free text space on the page - already existing ones and those from the CSV import.
• Properties that are not contained in the csv file have to untouched

ps. This worked in V1.0 but no longer in V1.3

Software version (if not a Wikimedia wiki), browser information, screenshots, other information, etc.:

• MediaWiki 1.35.5
• DataTransfer 1.3

In the following case i didn't affect the "Freetext" area.