Unable to load config after reboot

Hello all, I'd like to consult situation on our devices.

We have two BIGIP 5250 in 'vcmp mode'. vcmp hosts are in HA-pair, also all vcmp guests (4 guests). We upgraded all guest to 14.1.4 (from 13.0.0 directly to 14.1.4 without problems). The issue occurs for hosts. See below.

step1: 13.0.0->14.1.4. unbale to load configuartion. rollback to 13.0.0. success.

step2: 13.0.0->13.1.3.5. unbale to load configuartion. rollback to 13.0.0. NO success.

one of two HA-pair host is not loaded configuration correctly. it seems, that is not able to decrypt configuration. see the "show sys load configuration verify":

01071769:3: Decryption of the field (secret) for object (/Common/system_auth_name1) failed.
Unexpected Error: Validating configuration process failed.

Wwhen I remove '/Common/system_auth_name1' (there is radius secret), another part is not able to decrypt:

01071769:3: Decryption of the field (secret) for object (/Common/f5_api_com.key) failed.
Unexpected Error: Validating configuration process failed.

in log I can see also this:

Master Key decrypt failure - decrypt failure - final

'f5mku -K' is different for vcmp host01 (this is not able to load config) and host02 (this is running correctly). both vcmp hosts are running in HA pair (each has 4 vcmp guests in HA).

My question is, how to solve this issue without lost guests configuration on host01. Any ideas?