Move to external folder? in Devonthink 3

I have just purchased DTK 3 and have a query about creating new files in an indexed folder. In DTK 2 it used to be that I could create a new file (e.g. text) in an indexed folder and it would remain in the database only until I chose to ‘Move to external folder’. In DTK 3 it seems the opposite - the file is automatically moved into the folder. Is there a way to have the old functionality? i.e. most files I create in an indexed folder, I want to keep in the database only.

Indexed groups are now automatically synchronized both to and from the Finder, therefore this isn’t possible anymore.