This is a very important part for the both of us !!
Make sure you have bounced all files from grid 1,
named you tracks and bounce mono as mono and stereo as stereo.
A great tip here is to; Re-import everything into a new project and make sure everything plays in sync and files have the correct name and format.
I assure you, you don't want to pay me for this job !! :)
And I prefer being creative with your audio instead of organising it !