How to delete several channels?

[Ofnuts]

(01-08-2021, 05:45 PM)Krikor Wrote: I recently installed a plug-in and as an indirect result of its main function (Create luminosity Masks) it creates several channels in this process.

A created mask ends up producing about 6 channels.
If I apply the plug-in again to get another mask, or others, new channels are created in addition to the ones that already existed.

Can I point out that there is no such problem with ofn-luminosity masks