Sure you can:
Open your small project and open your larger, background project.
With your smaller project opened, Open FX stack>Motion>KeyFramer
Select Tab "Render">Source>Project List and select background project, which you can now see in the thumb.
Open "Position" Tab
OOPS -- something came up for me -- see if you can figure it out from here or someone please pich this post up, or wait for me to come back; tomorrow. sorry
Desktop PC W7Pro -64 bit OS; 32.0 GB RAM
Processor: i7-2600 CPU@3.40GHz
NVIDIA Quadro NVS 420; Intuos4 Wacom tablet
4x24 inch monitors ; LAN