Hello All--
I am working on a frame assembly. The frame is a weldment part and part of the main assembly. Inserted a smart part into the weldment and the feature seemed to work. The weldment profile changed a little and now the smart feature sketches error. The error message states that the smart part feature sketch cannot find the face/plane. I right click on the sketch in the feature tree to manually constrain update the references and the option is not there.
Has anyone ever seen this before?
Thanks.
Sincerely,
Chris 
Can you right click on the feature and select edit feature and then try to reset/reselect the reference.