Pivot Function in Power Query

Question

Hi all,
One thing i'm struggling with is the use of the pivot function to pivot a column within PQ.  I'm confused on why this happens and why I can't clear it up...but here goes:
I unpivot a set of columns which then gives me two columns (Attribute/Value).  I do this because I have repeated columns of data, but it should all fall under one column (think Hours, Hours1, Hours2, etc) - basically the input is coming from a form
that has repeating fields but everything is the same data type.
I make some adjustments to the Attribute columns (Replace items within the Attribute column) then Pivot the two columns again...theoretically I would be able to do this since i just unpivoted the same data, but:
I get tons of errors (usually "There were too many elements in the enumeration to complete the operation".).  I'm not entirely sure why this happens and it doesn't seem to make sense to me that I can't UnPivot and Pivot and get the same results
as I originally had.  
Any recommendations would be greatly appreciated!
EDIT: I'm choosing "don't aggregate" during the Pivot operation...I get values if I keep some sort of aggregate function, but not the right values (I get a count of the fields instead of the data within the fields)

Answer 1

Try this solution:
Once you are to step 3, add an index column that starts at 0 and another index column that starts at 1. 
Transform by Pivot Column using the names in Attribute to create new columns and the Values Column set to Value.  Under advanced options select Don't Aggregate. 
Fill Down the Date column
Filter rows to remove null from Work Time. 
Here's the M code from the advanced editor: 
let
    Source = Excel.CurrentWorkbook(){[Name="Table1"]}[Content],
    #"Added Index" = Table.AddIndexColumn(Source, "Index", 0, 1),
    #"Added Index1" = Table.AddIndexColumn(#"Added Index", "Index.1", 1, 1),
    #"Pivoted Column" = Table.Pivot(#"Added Index1", List.Distinct(#"Added Index1"[Attribute]), "Attribute", "Value"),
    #"Filled Down" = Table.FillDown(#"Pivoted Column",{"Date"}),
    #"Filtered Rows" = Table.SelectRows(#"Filled Down", each ([Work Time] <> null)),
    #"Changed Type" = Table.TransformColumnTypes(#"Filtered Rows",{{"Work Time", type time}})
in
    #"Changed Type"
If that doesn't work, this example might do the trick:
http://www.excelguru.ca/blog/2015/01/07/transpose-stacked-tables/