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No, I don't believe there is. You could ask about it on the contact form here:
https://www.safer-networking.org/support/#contactform

Spybot usually makes a backup of the hosts file after...

I added -h-n7y15mc.firoli-sys.com and cloudfront.net to hosts,and yes,upon removing and readding immunization to hosts those were removed.

I see your point if you placed the sites in hosts by...

Ok,gotcha.I didn't try adding them yet. :)
I never really thought about it before.But if they were listed as false positives in the forum,then it kind of makes sense if the sites would be removed by...

I have 3 sites I keep blocked in my Hosts file,besides the ones added by Spybot.
Checking just now,I immunized 2 items Spybot showed as unprotected,removed immunization completely,and then readded...