Can't move member out; error message

I'm trying to move records out from our ward (Stavanger, Norway) to a USA ward (Nauvoo, IL) but I'm running up against a consistent error: "Sorry, something went wrong loading the requested data. Try refreshing the page, or try again later."

I have found other posts with the same error, though they were trying to do different things. Those posts have suggested:

1. Clearing cache and cookies (tried it)
2. Trying different browsers (I've tried Chrome, Firefox and Edge)
3. Just waiting (I've been trying over a period of 5 or so hours).

Some possibly relevant information:

1. I'm only moving part of the family. Husband's record (military) is staying here, as is the record of eldest son (currently on a mission). So Mom becomes the new head of household.
2. There are no move restrictions on any of the records.
3. When inputting their new address, despite selecting United States as the country it does not provide a "State" selection or text field (not sure if it's supposed to).
4. The system is not saving the move in the "moves in progress" list on refreshing. (Though I'm guessing that's because I have actually input an address).

Besides just waiting and trying again over the next few days is there anything else that I can attempt? Something I'm overlooking?

Thanks in advance for you help! Happy Sunday!

You could split the household first, and then move the household that is moving to the USA. Much simpler and straightforward.

I second the idea of splitting the household. It sounds like too many things going on at once.

Thank you! That worked a charm. I guess it was just trying to do too many things at once.