Group pattern issue

Hi,

    i have a small group of features patterned simply around an axis, & would like to remove one of the these features from the group, & from all the pattened groups. It is a cosmetic thread i want to remove, but when i try to delete it, the pattern fails, which leads to other failures down the line. Is there a cheat, a way of dealing with this, up until now i have just hidden them, but its a pain in the backside picking them all. I have never been able to understand why pro-e & now creo behaves like this.

Thanks

John