catia assembly // symmetrical part

hello friends
i have question about catia assembly.
i have a product file which contain approximately same parts
and this parts has many hole with pattern fuction (32)
the symmetric part has some added pad and nearly same hole and pattern fuction (30)
i want to make a assembly with this parts and connect them with bolt and nuts.
i dont want to create symmetrical part so i copied file and rename it as a symmetrical. i change properties of symmetrical part by adding pads and changing pattern definiton.
now i want to use reuse pattern in assembly for bolt and nuts. orijinal part has no problem but symmetrical one does not recognize the pattern. i dont want to install bolts and nuts one by one. 30 bolt + nut = waste of time. do you have any idea for solution.
i apologise for mistakes in English.

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