-dataFolder /storage/blynk has the general and user configuration files.
/storage/blynk/data/ only holds the individual (historical) data for the users/accounts.
At least on my Ubuntu systems!?
I think the easiest way is to just copy everything from your Blynks working directory.
This will create a tar-ball with all files an directories recursively and keep the structure:
~$ cd /storage/blynk
~$ tar cvf backup.tar *
backup.tar to the directory which you intend to use on your RPi and extract the files:
~$ tar xvf backup.tar
You might need to change user and group to match your new system. From the same directory you extracted the files, do
~$ chown -R blynk:blynk *
where “blynk:blynk” is “user:group”.