This is now part 2 of my previous post:
Cloning issues:
We link our issues to a second project that keeps track of submits. Unfortunatly with a clone, everything is cloned, including the link to the original submits. However the whole point of cloning is to allow for a second submit in the next revision (for example if the fix didn't fully solve the problem and a second round of fixing needs to be done). So is there a way to define which fields should not be cloned by "Clone".