Removing an IP address from IP Intelligence database

Hi

according to this article:

https://techdocs.f5.com/kb/en-us/products/big-ip-afm/manuals/product/network-firewall-policies-implementations-13-1-0/7.html

section: Removing an individual IP address from a blacklist

When I delete IP from a blacklist, is there a default timeout for that IP to be deleted?

Or will the IP return in the next IP Reputation Database update? or it is a permanent deletion?

How this works?