FCP 6 sequence to 5.1.4 project?

Doing some contract work for some people but just realized they are still 5.1.4 based and ive upgraded to 6 already. Obviously I can still export the completed clips but they want to incorporate the sequences back into one master project for archiving. How can i go about integrating these two projects? ive never had to do this before so im kinda out of my element, i know it cant be too hard...

Thanks for the help

XML export the project and XML import it into 5.1.4.

but don't export with the default XML version 4.

that only plays with FCP6, i think.

use XML version 3.


cheers,
nick