If you have two local project and you need to mantain the same hierarchy/DB structure, u can only transfer the data via dblisting.
if your data are written in two differend DBs simply copy/paste from xxx000 of pc1 to x000 of pc2 the db that you have to update.
I hope this might help you.
Cheers
Are the two projects on two local machines?
Are the "objects" in the same zone of your destination?
Is not to easy to explain.
Is strange that you don't use online databases, but u need two local machine with two local projects.....