If you are replacing or adding an AT1000 running a version prior to 8.30 with new AT1000(s) that are running 8.30 or later, you must restore the 3DES MFK used to create existing districts (districts created prior to version 6.7) and create an AES MFK to support new district creation. To restore 3DES MFK, either create the same 3DES MFK or restore the 3DES MFK from the old AT1000.
All Atalla HSMs used by SecureData must be running the same Atalla software version.
Backing up and restoring the 3DES MFK is also important when you are upgrading to AT1000 HSMs from Ax160 HSMs.