F5 ASM Event correlation

Hello,

I have big-ip 12.1.3 and for a ASM security policy, i can not see any event in event logs -> Application -> requests.

By searching a support ID, i can only find it in event correlation.

The problem I have is that when I click on event , I see "no records to display" in the requests list, as ALL requests have been cleared from request list (see image below)

Therefore I have almost no information about the blocked requests, contrary to logs in event logs -> Application -> requests.

Is there a way to get back requests in the request list ?