Two installations here exhibit inconsistent behaviour with Paste Special accessed via the 
right mouse click. When copying and pasting 'special' once can always select to shift cells down. 
When cutting and pasting, occasionally one can select shift cells down, but usually one cannot. 
For example: Copy entire row 8, move to row 10, select paste special, down radio button available, 
cut row 8, move to row 10, select paste special, down button not available. Selecting partial rows 
or columns doesn't usually affect this behaviour, but nevertheless seems more likely to allow 
the down radio button to be selected than whole row selection.