Custom function to decompress .gz file not loading all rows

Hi all,

I created a custom function to decompress a .gz file. The custom function is based on this query, which loads 10.902.214 rows:

let
    Source = Binary.Decompress(Web.Contents("https://ec.europa.eu/eurostat/estat-navtree-portlet-prod/BulkDownloadListing?file=data/nama_10_a64.tsv.gz"),Compression.GZip),
    #"Imported CSV" = Csv.Document(Source,[Delimiter="#(tab)",Encoding=65001])
in
    #"Imported CSV"

However, if I create the custom function (see code below) with GZIPFILE = the url from the first code sample, it only loads 231.963 rows. What is happening here, does anyone know? Is there a limitation to the number of rows a custom function can handle? Or am I doing something wrong?

(GZIPFILE) => 
let
    Source = Binary.Decompress(Web.Contents(GZIPFILE),Compression.GZip),
    #"Imported CSV" = Csv.Document(Source,[Delimiter="#(tab)",Encoding=65001]) 
in
    #"Imported CSV"