CSV Carriage Returns Splitting Data to New Rows in Power Query

The issue is to do with the QuoteStyle being used in the query.

For more info, see the Official Documentation:

"QuoteStyle: Specifies how quoted line breaks are handled. QuoteStyle.None (default): All line breaks are treated as the end of the current row, even when they occur inside a quoted value. QuoteStyle.Csv: Quoted line breaks are treated as part of the data, not as the end of the current row."

To resolve it, edit your query as follows :

Csv.Document(file, [Delimiter=",", Encoding=1252, QuoteStyle=QuoteStyle.Csv])

That is, make sure to have ".Csv" following QuoteStyle, instead of ".None"