Where are located the consists created with the Custom consist editor?

I have been making some consists in Quick Drive using the Custom Consist Editor. Until now I have used them only in QD runs.
And I would like to use those consists in some scenarios I may be doing using the Build Scenario Editor. However I can´t find those consists.
Can you help explaining how to locate those consists for their usage and even editing them in the Scenario Builder?
And I would like to use those consists in some scenarios I may be doing using the Build Scenario Editor. However I can´t find those consists.

Can you help explaining how to locate those consists for their usage and even editing them in the Scenario Builder?