This probably has already been answered. If so can somone tell me how to find the answer. If not - Is there an easy way to change all library parts already in a project created in either AC 6.5 or 7 from 6.5 or 7.0 library parts to 8.1 library parts without having to change each library part individually. Can one also keep the attributes of these library parts that have already been defined in the model and not have to redefine each part from the default values?