What information about the original trend are you anticipating to change? For example, if it is the tag name, you can read the tag name using VBA from the original trend and then update it in the current trend. If it is the timerange, you could also do the same etc.
Did you succeed in achieving your "linked trend" as you were requesting?
Eugene had asked some relevant details.
I do have some other questions before we can come up with a possible recommendation:
- How are processbook files use: does each user have a copy? file is on a network share?
- Do you have PI AF in your facility?
- What kind of changes are most likely to happen and needed to be synced within several files?
I am interrested to know if you still more assistance on this issue or what is the solution you have implemented