Does Safenet track your IP indefinitely (or until someone finds you or it escalates to an FBI wanted warrant)?
Last I checked, they do not, but they don't alert you when you fall off the list. You may want to occasionally check Safenet's list of tracked IPs (I suggest using your browser's find function and just searching for the first two numbers of your IP) to see if you're still on the watchlist.
Safenet puts you off the list after 1 hour for
illegal transfer or
delete file reasons. I did not test the DDoS reason to see if it is 1 hour too.
One way to circumvent these warnings is to change your IP address at your ISP, although it's not recommended to waste an IP change only for that.