I have a "Gremlin" its been happening for a little while this Barcode Number "08VEAE01" Keeps Repeating.. I have tried to replicate it and it wont replicate where two different parts get the same name... but that same does appear in my test. I'm not sure what is causing this.

its always the Same product a 4 Drawer Stack.
I have checked of the "Clear File Names" Button and i still get that File name at least once.
in the work order it creates both needed parts but both parts have the same number so only the last part in the composite file will be the one the MPR  file is.

Anyone come across this? have tips or tricks.
I know that i can FORCE this by copying the side in edit design data and pasting it onto another part but I don't think that is what is happening here.