PQ-transpose data from several lines to one column

[sandy666]

BEFORE				Value
Column1	Column2	Column3		546
546	546	546		547
547	547	547		548
548	548	548		549
549	549	549		511
511	511	511		512
512	512	512
				546
				547
				548
				549
				511
				512
				546
				547
				548
				549
				511
				512

// Table1
let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    Trans = Table.Transpose(Source),
    Space = Table.AddColumn(Trans, "Custom", each " "),
    UNP = Table.UnpivotOtherColumns(Space, {}, "Attribute", "Value"),
    RLN = Table.RemoveLastN(UNP,1),
    RV = Table.ReplaceValue(RLN," ",null,Replacer.ReplaceValue,{"Value"}),
    RC = Table.RemoveColumns(RV,{"Attribute"})
in
    RC