Part, Insert Part bug?

Is this a bug or am I doing something wrong?

in a part, I have inserted another part. I constrain it inposition, and it looks correct. Then I click the green check andthe inserted part pops back to where it was disregarding the mates.If I edit part again, the constraints still show, but they aren'tactually constraining the part.

No error messages.

BTW, I have four parts inserted into this part, not sure if thatwould make a difference.SolidworksParts And Features