Power Query/ Get and Transform Merge Columns if then else combined

HEre is the Mcode

let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"size", type text}, {"1", type any}, {"2", type any}, {"3", type any}, {"4", type any}, {"5", type any}, {"6", type any}, {"7", type any}}),
    #"Merged Columns" = Table.CombineColumns(Table.TransformColumnTypes(#"Changed Type", {{"1", type text}, {"2", type text}, {"3", type text}, {"4", type text}, {"5", type text}, {"6", type text}, {"7", type text}}, "en-US"),{"size", "1", "2", "3", "4", "5", "6", "7"},Combiner.CombineTextByDelimiter(",", QuoteStyle.None),"Merged"),
    #"Replaced Value" = Table.ReplaceValue(#"Merged Columns",",n","",Replacer.ReplaceText,{"Merged"})
in
    #"Replaced Value"