I have information in a many cells of sheet1 and desire to place it in another cell in sheet2 I can do it by a reference but if I erase the value of the cell of sheet1 i like to keep the value in the cell of sheet2

i want to do this automatic if i delete a cell of sheet1 don't erase a cell in sheet2. i can do with copy-paste special but i try a difference way. Anyone can Help me..