Cannot edit SNMPv3 profile that is synced with Network Flow Analysis and configured to use AES256
DE436715 - For AES 256, NFA currently uses the wrong privprotocol value when synchronizing AES256 profiles.
Dx NetOps Performance Management
The fix for this issue is currently targeted for CA Performance Management 10.0.3.
Note that this is subject to change and there are no release dates that can be provided at this time.
Please contact support for further information.