Which version of ScyllaDB are you using?
Note that we have deprecated and removed sstableloader in ScyllaDB 6.1. We recommend that you use nodetool refresh --load-and-stream to load SSTables into the cluster instead.
So what are the basic steps for a cold migration from Cassandra to ScyllaDB?
I put all the .db-Files from the Cassandra-Snapshot to the import-Folder of the appropriate Table in ScyllaDB. After running nodetool refresh --load-and-stream the files in the import-Folder were removed but select count() still returns 0.