I have been grappling with disappearing serial numbers for months, and I just discovered a major culprit: virtual parts in assemblies.
In short, if an assembly contains 5 virtual parts, the serial number will advance by 5 every time the assembly is checked in. I'm not talking about the first time the assembly is checked in, or when it is first added to the vault - every time I check it out then check it back in, it eats 5 serial numbers.
I have tested this with several assemblies which contain virtual parts, and it is consistent; if the assembly contains 3 virtual parts, checking it in advances the serial number generator by 3 numbers. If it contains 12 virtual parts, checking it in advances the serial number generator by 12 numbers. Every. Time.
Has anybody else experienced this strange, unexpected behavior?
Is this supposed to happen?
Is there any way to stop it?
EPDM 2011 sp0