VBA find and replace not working for all columns - excel

Question

I am using a piece of code that loops through a Excel worksheet, uses the keys from it to copy another set of data into it. The two datasets (Dataset A to Dataset B) looks like following:
Dataset A:
Key Val1 Val2 Val3
123 yes up right
324 no down right
314 no up left
Dataset B:
Key Val1 Val2 Val3
123
314
324
When the script is ran, it copies the data based on the Key. My code works for Val1 and Val2, but results in only blank entries for Val3, which is unexpected and unwanted. My code is as follows:
Sub copyData()
Dim i As Long, arr As Variant, dict As Object
Set dict = CreateObject("scripting.dictionary")
dict.comparemode = vbTextCompare
With Worksheets("COMBINED")
'put combined!a:d into a variant array
arr = .Range(.Cells(2, "A"), .Cells(.Rows.Count, "D").End(xlUp)).Value2
'loop through array and build dictionary keys from combined!a:a, dictionary item from rows b:d
For i = LBound(arr, 1) To UBound(arr, 1)
dict.Item(arr(i, 1)) = arr(i, 2)
dict.Item(arr(i, 2)) = arr(i, 3)
dict.Item(arr(1, 3)) = arr(1, 4)
Next i
End With
With Worksheets("All SAMs Backlog")
arr = .Range(.Cells(3, "C"), .Cells(.Rows.Count, "C").End(xlUp).Offset(0, 3)).Value2
'loop through array and if c:c matches combined!a:a then put combined!b:b into d:d
For i = LBound(arr, 1) To UBound(arr, 1)
If dict.exists(arr(i, 1)) Then
arr(i, 2) = dict.Item(arr(i, 1))
arr(i, 3) = dict.Item(arr(i, 2))
arr(i, 4) = dict.Item(arr(i, 3))
Else
arr(i, 2) = vbNullString
arr(i, 3) = vbNullString
arr(i, 4) = vbNullString
End If
Next i
'put populated array back into c3 (resized by rows and columns)
.Cells(3, "C").Resize(UBound(arr, 1), UBound(arr, 2)) = arr
End With
MsgBox ("done")
End Sub
Any help is appreciated.

Answer 1

Use Combined column A as the dictionary key and combine the multiple columns into an array to be stored as the dictionary Item
Sub tranferData()
Dim i As Long, arr As Variant, dict As Object
Set dict = CreateObject("scripting.dictionary")
dict.comparemode = vbTextCompare
With Worksheets("COMBINED")
'put combined!a:d into a variant array
arr = .Range(.Cells(2, "A"), .Cells(.Rows.Count, "D").End(xlUp)).Value2
'loop through array and build dictionary keys from combined!a:a, dictionary item from rows b:d
For i = LBound(arr, 1) To UBound(arr, 1)
'add key and multiple items as array
If not dict.exists(arr(i, 1)) Then _
dict.Add Key:=arr(i, 1), Item:=Array(arr(i, 2), arr(i, 3), arr(i, 4))
Next i
End With
With Worksheets("All SAMs Backlog")
arr = .Range(.Cells(3, "C"), .Cells(.Rows.Count, "C").End(xlUp).Offset(0, 3)).Value2
'loop through array and if c:c matches combined!a:a then put combined!b:d into d:f
For i = LBound(arr, 1) To UBound(arr, 1)
If dict.exists(arr(i, 1)) Then
arr(i, 2) = dict.Item(arr(i, 1))(0)
arr(i, 3) = dict.Item(arr(i, 1))(1)
arr(i, 4) = dict.Item(arr(i, 1))(2)
Else
arr(i, 2) = vbNullString
arr(i, 3) = vbNullString
arr(i, 4) = vbNullString
End If
Next i
'put populated array back into c3 (resized by rows and columns)
.Cells(3, "C").Resize(UBound(arr, 1), UBound(arr, 2)) = arr
End With
MsgBox ("done")
End Sub