Same here. Little Eric/D who? The kid Nick had who Taylor gave birth to but was biologically Brooke's? Heck, Brooke and Ridge shipped off their son RJ to God knows where when he was a kid. He popped up a few years ago only to vanish again.
Sheila has, I believe, 5 children. Twins Daisy & Ryder, Mary, Diana & Finn. Not to mention she had plastic surgery to look exactly like Phyllis and actually died on Y&R.
Bell has once said that what happens in Genoa City stays in Genoa City, but come on!!! They keep on doing crossovers. Summer, Phyllis, Sally & Eric have been part of the Sally crossover backstory. Stop doing crossovers if the soaps aren't intertwined.