How do you import preset color filters from GR6 to GR7?
There is not such a feature but I've reached out to the Guitar Rig team and they got back with the following. Please note this is not guaranteed to work.
Try copying the file in the directory above ~/Library/Application\ Support/Native\ Instruments/Guitar\ Rig\ 6/Component Favorites.xml On first run the database may be deleted automatically by GR, so run standalone once, then try copying the xml above and the Database folder to the same folder for Guitar Rig 7. Do not copy the lock file.
All of this is not really supported because we can’t guarantee that everything referenced in the database is present on the target system.