That’s a great question, and I’m glad you like our tool!
In CalendarBudget, whenever you do a drag operation, either dragging an entry from one day to another, or reconciling by dragging something from the bank import list onto an existing entry, you are making an update to only that one entry. If the item you are dragging (or for bank import – dropping onto) happens to be a repeating entry, this drag operation actually splits that single entry off of the repeating series, leaving it as a lone entry. So – the rest of your repeating series will be unaffected, just that one is affected. If you make and changes to the repeating series, the entry you dragged will not be affected anymore since its no longer part of the repeating series.
Hope that makes sense. Let me know if you have any other questions.