A trace of all faulty deeds remains, even after their repair, in order to reveal perfection.
The consequences of each and every deed ever performed remain in existence even though the deed is already in the past. Thus, when a flaw has been repaired, the trace of the flaw does not disappear, but rather it is registered as a flaw that received its repair. And the reverse also applies. This is because nothing is forgotten before His throne of glory. And at the end of the entire cycle there will be a complete repair taking into account everything that was done, whether good or bad.