Sound like you'll have to dissolve the pattern. RMB on the pattern feature in the tree & click dissolve.
Great, that has solved my issue. Many thanks Ian
When you say you want to edit one of the instances, you mean you want one of the sub-assemblies that you have in the linear component pattern to have a different configuration? ie: take out these 3 parts in this spot
If so, you should do a configuration in the sub-assembly and then select that configuration for the instance you are changing. Then your pattern stays intact and you get the variation.