Thanks for replying. We don't use One World, so don't have subsidiaries. I can't delete as there are (correct) transactions against the Nexus.
To give some context: We are UK based. We went over the threshold of sale into Ireland so we had to register for VAT there. Since the UK left the EU, we no longer need to be registered for VAT in Ireland (all exports are zero rated) and but I cannot find a way of making the Ireland nexus inactive. I also don't want to 'fudge' the system (like just zero rating the VAT but leaving it in the wrong nexus) as the transactions need to be on our UK VAT submission, even though they don't affect the VAT amount payable.
I'm quite confused as I think this should be possible (and normal) but I can't see a way around it.