I have a kind of crazy workaround for this. (1) Use the BAR tool to create a new empty measure (A) that is next to the measure that you want to copy the notes to. (2) Use the BAR tool to create a new measure (B) that consists solely of the notes you wish to copy. (You will need a bar before the notes and after the notes). (3) Highlight measure B and then COPY it. (4) Highlight measure A and then PASTE into it. (4) Use the BAR tool to delete the bars around measures A or B as you see fit. (5) You can use the Auto Format tool to make if look better, if desired.
If there is an easier way, I would like to hear about it.