Do you have IP redundancy turned on? If so, turn it off, the IP shouldn’t change.
Device_Type, Model_Class, Model_Name, and LockConnection are the only ones that can be locked:
Lock_Device_Type
0x12e84
Boolean
Lock_Model_Class
0x12b4a
Boolean
Lock_Model_Name
0x12a52
Boolean
LockConnection
0x129f1
Integer
Cheers!
Jay