Rockstor 3 to Rockstor 4

@kingwavy Hi yes I have done exactly this (although with not as many disks, and was a relatively simple 2-disk raid1 setup). It worked fine for me, and I always have a backup just in case. If all the array members are connected, importing from one should bring the whole lot into play.
I assume you have effective backups, in case the worst happens?

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