CDI troubleshooting guide says "Disconnect the rectifier". Why?? How does it effect spark?

[777funk]

My understanding of CDI is:
stator generates AC voltage to charge capacitor in the CDI. Trigger(s) send signal to solid state electronics to discharge with the engine's timing to power the coils producing the spark.

The rectifier turns the charging coil's AC voltage into DC to recharge the starting battery.

So how does unplugging the rectifier bring back spark in some cases? I'm confused as to how it has any relation to the CDI system or preventing spark when it fails.

 

[Jiggz]

A shorted rectifier can affect the voltage output of the stator's charge coil (output to the CDI) because both windings, alternator (for the battery through the rectifier) and charge coil windings share the same ferrous or magnetic core, i.e. stator.