To copy columns from below to above

Select the column elements and choose Edit > Copy.
Choose Edit > Paste. This pastes the new column elements in the same location as the original column elements. The pasted column elements are the active selection.
Change the Support Set property from "below" to "above" in the Column Element Properties dialog box.

Note: If you do not change the Support Set designation then there are duplicated column elements that do not allow the model to run properly. If you have copied a large number, it is tedious to delete the second column element at each location (one by one).