To give you an idea, my projects have 6 busses Kicks, Snares, Perc, Basses, Synths, FX. ALL tracks route throuhg one of these channels, and each of these channels has recieves sidechain input form either Kicks or Snares. Therefore, if i do any routing on any other track I either have to avoid using 3/4 or 5/6 (as it would trigger the sidechain on the parent) or i have to switch off parent send and route it manually - which is not a huge task, but forgetting to do so would trigger the sidechain, and as it only on a specific freq range this can go unnoticed for a while, making me make channels louder (as they are now ducking themselves) etc.