portable version and safe-plugins flag question

when i installed CD in portable mode, it still register itself as the default browser, ‘taking over’ from my current default, firefox. so, in portable mode, it still writes something to the registry.

is there any way (with flags for example) to achieve ‘true’ portable behavior from CD, that no changes are made outside the dragon folder ?

also, in the new version 14.0, is the safe plugins flag supported again ?