Thanks again for confirming that. Did in fact get in contact with customer support and they said exactly the same thing. Today I have learned!

Thank you both - the listing was classified so as you said Callum no worries. I'll see if I can communicate my issue to TM.

That sucks man, sorry to hear. Fortunately not what happened in my case - I had successfully sold the vehicle and went to try and change it's status to sold, but the onscreen 'sold' button ended up only giving me the option to withdraw the listing. Naively thought it might be alright, except no, the listing was just withdrawn instead of being recorded as sold. But the same possibility you mentioned did also worry me.