Autodesk Inventor

[#1]

I have a simple bolted connection (bolt, nut and washer) and have tried to pattern this to make a toal of 4 bolted connections in a linear pattern. The preview looks fine however when I hit apply the patterned components dissappear. I'm not sure why this is, can anyone help ? I am using Inventor 2013 64-Bit SP 1.1

[#2]

To create pattern bolted connection, I suggest to create the pattern holes in component firstly, then create the bolted connection by hole and follow pattern. Showing as the snapshot below