Problem with drilling assistance function

Hello

I am facing a problem with the assistance for the piercing. Indeed, I can no longer constrain the drilling with the existing drilling of a part. In the attached photo, there is part A and B in an assembly. A and the first piece insert and B the second. How is it that when I edit room A, my function no longer wants to be constrained to room B?

Thank you


capture.jpg

Hello

In my opinion it's normal since you edit the play. To constrain two parts, it must be done in the assembly and not in the part...

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I did it in the assembly and I found my mistake. There was a link in the existing assembly that simply constrained part A with another assembly. 

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