Pierce Point in Assembly

Hi, 

i have an assembly where i want to connect a sweep feature (Name: hanger) via sketch (from the main assembly) to another sweep feature (name: wire rope). This has worked via a pierce point on the first couple of sweeps/hangers (see below). 

my issue is that i want to continue with this but all of a sudden i am not able to pierce the next sweep feature to the wire rope. I can not figure out what has changed and why it has worked on the first couple but does not work on the next part. 

Any ideas would be appreciated. 

Thanks!