Significant data left over after graceful exit

Hello @bramnet,
Welcome back!

It should remove data after a successful GE. However you perhaps have data from the decommissioned satellites: How To Forget Untrusted Satellites

yes, it’s normal, since your node is not checking in on the satellites anymore.
If you performed GE on all satellites and have receipts of the successful finish, you may uninstall the storagenode software and delete all data and its identity.