Scanning files in the Virus Chest >> https://www.avast.com/faq.php?article=AVKB21#idt_04

After a False Positive, you can scan to see when not detected (fix released) and then restore

Then there are some AV that autoscan content in quarantine after evry update and give you a notification of FP that can be restored (Panda) or the now gone Norman AV that auto restore FP