Basic process is to export the pools, then remove the old pool disks, then move the new pool disks, then import the pool.
You can simplify things by ensuring the new pool has the same name as the old pool, then the sharing configs etc will come back when you export one pool, and import the other.
If you’ve been keeping the “new” pool uptodate with the old pool via replication, make sure the replicated datasets are not configured as read only.
