In programming languages, a string of text usually begins and ends with single or double quotes. I’ve seen plenty of times where something as simple as an apostrophe in a name can throw everything out of whack (ex. O’Reilly) because it prematurely ends the text string. That’s why proper escaping is so important, and why I asked if you had any single or double quotes which would include apostrophes. It was only a thought of something to check. Dates and RowID’s should be pretty stable, but text is unpredictable.
Other than that, it’s hard to say without seeing the actual JSON or the inputs. You may need to create a support ticket.