Question on the Hinge Tutorial

I'm going through the Solidworks tutorials, so far so good, I have just finished the hinge tutorial.

One thing didn't seem to work correctly though, when I was assigning mates and working on collision detectment, the hinge recognised what was going on and worked as a hinge. When I ticked to close the feature manager after it was working and re-tried the part it had lost the collison detectment.

Is that normal, or did I miss something?

Thank you.

Chris

Message was edited by: Chris Morse - Zip  File attached

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