Quotes not closing?

Hi all,

I don't make many quotes, but the ones I've made recently always show up as an 'open quote' option when I select a customer for invoicing, even if I've already converted the quote to an invoice, and no matter its set status/expiry date. I've noticed this since at least mid-2024, but my older quotes (I have a few converted ones from 2023) don't do it for some reason, and there's no difference between them and the problem quotes I can see.

I added some screenshots of my main example - this 'open' quote had already been converted in August last year. I have another from last month I recently changed to 'accepted', and it shows up as an open quote as well. Declined ones behave the same.

Is this supposed to be happening, or am I missing a trick somewhere? It's a part of why I try not to use MYOB for quotes.

Thanks in advance!