I raised your question to the attention of our developers and I am afraid that the desired scenario will be very difficult to handle.
Currently there is not an appropriate approach, which I could recommend using for the modification of the custom tools.
We are planning to improve the "Track Changes" functionality in future, although I cannot provide the estimate time, needed to complete such a task, due to the complexity of this matter.
Please, keep in touch with us for more information on this subject.
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