Cannot move accepted items from organization form to public calendar

[dwcleck]

We have an organizational event form setup that users send out to
designated people for acceptance. They are to get all accepts and then
move the event to the public calendar (they cannot until all are
accepted). But every now and then users cannot move it to the public
calendar even though they've received all acceptances.

In my ongoing research into this I've seen some users who will get each
acceptance back and them move that accepted email into another folder
(out of inbox). Sometimes into a pst folder for example. Could that
be a problem?

Thanks for any help,