Hello, I'm hoping to get some general tips on constraints.  On a fairly large assembly with a pipe from which I deleted all the constraints, it still disallows new mates.  It seems locked into an orientation, but regardless - I have deleted the subassembly and placed a new one in the iam.  The new one still seems to have some type of constraint hanging on like a hidden booger.  It refuses to attach - no constraints will work, aligned or mated.

-How do you like to look at a subassembly to see if it's free?
-Is there a way to clear constraints reliably?
-In the feature manager, is the obvious location for mates the only one?  Or there other hidden places? 
-What should I try to get the old one cleared out and put a new one in?
 
Thanks, Artemetra
Inventor Routed Systems 2010 SP 2 64 bit 

Hoi,Did you try " View - Degrees of Freedom "