When you paste objects into a layout, they land where you last clicked, even if the click was on a different layout. If you click where you want them before you paste, it'll be a lot closer.
Your milage may vary but here is what I found works best for me:
• Use cmd-drag to select the objects to copy and then cmd-shift-drag to deselect any extra object that shouldn't be copied.
• After selecting the fields on the original layout, group them.
• In the destination layout, ensure that the receiving slider is selected.
• Click the centre of the receiving object before pasting. (If the group is too large for the receiving object, paste off-layout to the right.)
• Nudge the group into place.
not a trick, but a habit: I copy some objects, then paste them onto a free space in the layout (often outside the visible part) and then drag the objects to the desired location
Its the click in the middle of the area that is somewhat counter-intuitive...
Although the answer is also only half-right as the cmd-drag doesnt work in this case. It wont start if you are in the slider, and if you are outside the drag thinks the slider just isn't there, or has no selectable objects...
Mike beat me to it.
I usually start the cmd-drag from outside the layout (right hand side) and drag across all objects aiming for those to be copied in the slider. Then I do a second cmd-drag while holding the shift key to deselect the unwanted objects between those on the slider and the right hand side of the layout. It's a PITA but becomes second nature.
Alternatively, I shift-click to select/deselect multiple objects individually.