Combine Rows for Single Order in DAX

A7T57ZZ Seems like a simple Group By:

let
    Source = Table.FromRows(Json.Document(Binary.Decompress(Binary.FromText("i45WMjU1MLcwBBLmhgZKOkogbGlgoBSrg1XK0Ai7nImFAYjCpc0MpCsWAA==", BinaryEncoding.Base64), Compression.Deflate)), let _t = ((type nullable text) meta [Serialized.Text = true]) in type table [#"SO - Doc & Line" = _t, #"Line Item Qty" = _t, #"OBD Line Item Qty" = _t]),
    #"Changed Type" = Table.TransformColumnTypes(Source,{{"SO - Doc & Line", Int64.Type}, {"Line Item Qty", Int64.Type}, {"OBD Line Item Qty", Int64.Type}}),
    #"Grouped Rows" = Table.Group(#"Changed Type", {"SO - Doc & Line"}, {{"Line Item QTY", each List.Sum([Line Item Qty]), type nullable number}, {"OBD Line Item Qty", each List.Sum([OBD Line Item Qty]), type nullable number}})
in
    #"Grouped Rows"

Or in DAX:

Table = SUMMARIZE('Table'[SO - Doc & Line],"Line Item Qty",SUM([Line Item Qty]),"OBD Line Item Qty",SUM([OBD Line Item Qty]))