It’s possible to copy / paste single pages (i.e. 16 steps). From page 86 of the manual …
TRACK PAGE COPY
A track page is one of the up to four pages of sequencer steps a pattern can contain. Cop- ying a track page includes all trigs and parameter lock settings of the track page. Before performing a track page copy operation, make sure you are in GRID RECORDING mode. If not, press [REC].
Select the track containing the data you want to copy, then select the track page you want to copy by pressing the [PATTERN PAGE] key. Hold the [PATTERN PAGE] key and press [REC] to copy the track page. A message saying “COPY PAGE” page will appear. Select the track page you want to paste the copied page to by pressing the [PATTERN PAGE] key. Paste the data by holding [PATTERN PAGE] while pressing the [STOP] key. A mes- sage saying “PASTE PAGE” will be shown in the display. Pasting a track page overwrites any previous trigs, parameter locks, machine and effects assignments.
The paste track page operation can be undone by pressing [PATTERN PAGE] + [STOP]. The message “UNDO PAGE” will be shown in the display.