DavidR
7
With a file in the chest if it were essential your system could already be working in a negative way because the file isn’t where is should be and because the chest is a protected area, nothing can run inside there or access files stored there (other than avast).
There is no rush to delete anything from the chest, a protected area where it can do no harm. Anything that you send to the chest you should leave there for a few weeks. If after that time you have suffered no adverse effects from moving these to the chest, scan them again (inside the chest) and if they are still detected as viruses, delete them.