You can copy-paste values between columns that are the same type. Simply:
- Select the cells you want to copy
- Press Command + C if you're using a Mac, or Control + C if you're using a Windows PC
- Select the cell you want to paste values into or scroll down and hold shift before clicking to the last cell to highlight a range of cell to update.
- Press Command + V if you're using a Mac, or Control + V if you're using a Windows PC