It's very weird behavior
I open a part and add some connection points
Close the part and the assembly
Open the part, all the connections points are gone
Anyone has seen some like this before
Are they gone from the Feature Manager or are they just gone from the viewport?
gone from features manager
Hmm...that's a new one on me.
Are you opening trhe part in context of the assembly. If so, please open the part standalone. Close and save it. Ideally the part should not be already opened in context of any assembly. Make sure you only have one copy of the part and that it is in the routing library folder. Never have multiple copies of the part, if you copy a part always change it's name.
That's all I can think of for now.
I think your're right
I open the part itself, add cpoints and save the part and open the assembly - the cpoints remain with the part
Retrieving data ...