Because they do not have a signature (modified_by, modified_on). They do 
not have a signature because they are meant to be write only and they are 
meat to be written even before a user logs in.

On Friday, 26 June 2015 15:52:56 UTC-5, 黄祥 wrote:
>
> hi,
>
> just wondering about record versioning on auth tables, why the table auth 
> events and auth cas don't have archives table when i use record versioning 
> on auth tables?
>
> thanks and best regards,
> stifan
>

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