Well, they can't produce more of the same type of sexlink. But if say, the black sexlink daughters were silver based they could then be bred to a gold based rooster and produce gold/silver sex links.
Or say if you cross a gold/silver sexlinked rooster that does not carry barring x barred hen...
Because they will be not be barred. So you couldn't produce more black sexlinks with them, because black sex links rely on a non-barred rooster x barred hen.
Here, so you know how sex is determined in humans? The mother will pass on one X chromosome to each offspring, and the father will pass on either an X or a Y. If the offspring receives a second X, it's sex will be female; if it receives a Y, it will be male.
So:
XX = Female
XY = Male
The...
Yep, You could potentially have a bird that hides barring if they have dominant white or something, though even then a lot of the times you will see ghost barring.
But if you stray towards solid/darker males you shouldn't have to worry much about hidden barring I don't think.
ETA: I just...
Not true. If you have a rooster that does not have any barring genes, and cross him to a barred hen you can get sexlinks. Even if they are the most mixed up scrambled birds ever.
You could also create sexlinks from crossing a silver based hen to a gold based rooster. Males will be silver, and...
You could mix him to the barred rock and cuckoo marans hens and create black sexlinks.
The males will be barred and have a head spot as chicks, the females will be solid.