Do you often do disavow link pruning? Well, maybe you should? Gary Illyes from Google said on Twitter that if you see that your rankings drop after you upload your disavow file, then remove some of those less shady links from the file and reupload.
Here is Gary's tweet:
@schachin @seona_b @bhartzer @JohnMu @Majestic ^ that, and if you see your rankings dropped after a disavow, just remove the less shady links from the file. You have total control
— Gary Illyes ᕕ( ᐛ )ᕗ (@methode) April 7, 2017
I've never seen Google recommend this before. I've seen Google say that if you are disavowing links because you think those links should be disavowed, then keep those links disavowed. But here Google is clearly saying when you are unsure, then don't be as aggressive, which may not have been the approach in the past.
Forum discussion at Twitter.
Source: Search Engine Roundtable