Power Query: transpose data related to same ID in row

Product Article ID	EAN.1	EAN.2
55a62da4-4f82-4fc4-afbc-c3fbdc40e1d2	8591454005939
b04fa022-79bc-41ae-860b-b81cf33385b9	5703538244988
d9e60527-9dff-4982-ad3f-1630ffa30386	5703538245244
f596abca-e6bf-4527-b687-476a16565017	5713571000205	5713571000212
517e03c6-432f-4bd8-9796-e9974f2f8b05	5703538759819
e7176d60-a687-4f06-aa94-114e4b355e0b	5703538759499	5703538755903
6b2723e9-b36f-457e-8b39-9ffac835be7d	5703538759994	5703538759970
c9182c83-761d-4380-a867-42744ef5930d	5703538759697
ae87520b-2a1c-443f-a8cc-2c07a82c2652	5703538759215
51fc53ea-5286-4591-abf8-170c7559a6c1	5713571001219	5713571001202

// Table1
let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    Text = Table.TransformColumnTypes(Source,{{"Product Article ID", type text}, {"EAN", type text}}),
    Grp = Table.Group(Text, {"Product Article ID"}, {{"All", each _, type table}}),
    List = Table.AddColumn(Grp, "EAN", each [All][EAN]),
    Ext = Table.TransformColumns(List, {"EAN", each Text.Combine(List.Transform(_, Text.From), ","), type text}),
    MaxCount = List.Max(Table.AddColumn(Ext, "SCount", each List.Count(Text.Split([EAN],",")))[SCount]),
    Split = Table.SplitColumn(Ext, "EAN", Splitter.SplitTextByDelimiter(",", QuoteStyle.Csv), MaxCount )
in
    Split

do not use automatic Change Type