Hello Larry -
at this time, there are some technical difficulties with using the bulk post tool on the saved listings page - even if you are only using it to post a single item. So, posting individually as you have is currently required. Our engineers are aware of this difficulty and are looking into a solution. I have no ETA on when this solution may become available, but will update this forum thread when more information regarding this issue becomes available.
Apologies for any inconvenience this may cause.
- Craig