• If you copy, edit references, or place a group with a round that contains user-defined transitions, the system moves these transitions from the resulting feature.

• If a round feature fails due to missing transition references, the system displays an error message and instructs you to redefine the transitions by selecting references for each transition. If a transition has invalid references, you may repair the transition by replacing references that are missing or invalid, or you can change the transition type.

• If the round set geometry is modified in Set mode (for example, references or sets have been removed or added) resulting in the associated user-defined transitions becoming invalid, the system will delete the invalid transitions and reconstruct the default transitions for the round geometry. Note that the system will always maintain user-defined transitions whenever possible.