I have been having this issue for quite some time now ,and I have discussed it via telephone on a few occasions with no solution.
The problem is that when I place cabinets into a job they are losing the hardware hole associations.
In the cabinet editor the hardware hole associations show up properly in define defaults, but as soon as I bring them into a job and than back to the cab editor for review or changes they are gone.
This is a problem because I send my files to Northwoods for machining, and only random parts are getting hardware holes machined causing me much added time in assembly.
I had something similar to this once where my hardware patterns were replacing my customers patterns. When they sent me the file and I would open and look at a cab default, it would replace there hole pattern with mine. Same hardware different patterns. I don't know why and could never repeat when tried. This has not happened recently but I don't tempt it anyway. One thing to try is don't click OK when leaving the default page and don't have any fronts highlighted. I hope this helps as it is random.