How to append multiple columns from inside one table

Hi apoje 

I am not sure why you've completely ignored my solution all along 🤔. It does exactly what you showed in your first post in a simple way. If the base table is "tbl_bundle" in the files you've shared, you can create a blank query with the following M code and you'll get the result. It is the same as I posted a couple of days ago already:  

let
    Source = tbl_bundle,
    #"Removed Columns" = Table.RemoveColumns(Source,{"SKU-bundleID"}),
    ExtractColumns_ = Table.ToColumns(#"Removed Columns"),
    ContentCols_ = List.Combine(List.Alternate(ExtractColumns_,1,1,1)),
    QuantityCols_ = List.Combine(List.Alternate(ExtractColumns_,1,1,0)),
    final_ = Table.FromColumns({ContentCols_, QuantityCols_}, {"ContentAll", "QuantityAll"})
in
    final_

Please mark the question solved when done and consider giving kudos if posts are helpful.

Contact me privately for support with any larger-scale BI needs, tutoring, etc.

Cheers