How to ignore duplicate entries in a NZB?

Hello,

sometimes I get nzbs where the entries have clearly been duplicated many times and sabnzbd download all those duplicates. What is the best way to not do so? To be clear, I am not talking about an nzb file being a duplicate of another, but a single nzb file containing multiple times the information about the same file to grab.

For instance I am looking at one nzb file right now where I can clearly see a file node is an exact duplicate of another one (same file attributes, groups, segments, etc) so it should be easy for sabnzbd or a script to see it too.

Thank you!