Synching RW 6 resources, after upgrading from RW 5

Just got round to upgrading all my sites to RW 6 (from 5).

Until now I have used ChronoSynch to move the entire contents of:

~/Library/Application Support/RapidWeaver

between the two machines which I use - on a thumb drive.

Now that Addons are all in:

~/Library/Containers/com.realmacsoftware.rapidweaver6/Data/Library/Application Support/RapidWeaver

Can I do the same thing when I make a change on one machine to have it reflect on the other?

Or do I need to go further up or down that new directory tree in Containers?

Or would it be dangerous because each of the two machines needs a different environment in: