If you have for example an item (e.g. JSON data) that will be split into multiple values in dependent items, you currently can't re-build the historical data, for later created dependent items.
Resulting main item has this JSON as text data stored. 2 dependent items using JSONPath in preprocessing getting value1 and value2 data.
A later created dependent item with JSONPath in preprocessing getting value3 data would have no history.
Please add the possibility to re-create historical data for such cases.