I am reading through GTD now (brought it years ago, but in an amazing twist of events, never got through it) and his suggestion would be to have exactly one in

I am reading through GTD now (brought it years ago, but in an amazing twist of events, never got through it) and his suggestion would be to have exactly one in place, where all your information gets put, then you sort through it one at a time, not to do the item, but to figure out where the item belongs: in your case it is very clear that it does not belong on slack, but in a bug tracking system, so just put it there.