Can anyone clarify on couple of queries related to Grabbit (GitHub - TWCable/grabbit: Grabbit - Fast Content Sync tool for AEM/CQ)
-> Is Grabbit compatible with AEM 6.4?
-> Can content be copied from AEM 6.4 instance to AEM 6.0 instance?
By looking at: Copy from one location to an entirely new structure · Issue #205 · TWCable/grabbit · GitHub
Migration from 6.0 to 6.4 is not possible where as between 6.4 to 6.4 it is possible.
But, I would recommend you ask this question at Issues · TWCable/grabbit · GitHub as this is more relevant to grabbit than AEM.