Going to be honest, by looking at the code you posted I don’t really understand what you are doing or why. I think that in order to grasp it fully I’d need to see it in action and be able to look at the field group(s)?
Can you attach the JSON export for the field group(s) in question? Export them to JSON and then put them in a .zip file and you should be able to upload them here. Or if you want you could create a GIST or put the code online in some way so that I can see the field group(s)
