Worked it out. You have to go back to the "Classic" selling overview and
then you can do it using the "More actions" drop-down list for the item.
A bit of a nuisance and yes, appears to be functionality removed.
I am having the same problem and cannot remove the "Unanswered message"
flag even though I have answered the message. Would be nice to get a
response from eBay as this is annoying. Not sure if true, but there are
claims in the discussions that this f...