Hello again,
As previously noted your suggestion has been passed along for consideration, but there is not, as of yet, any new information I can provide to you regarding this feature. We are also aware of a situation with the Advanced Edit tool in regards to shifting Fixed Price items to Auction items that relates to the duration, which is being looked into, but I have no updates regarding that situation at this time, but will update this thread as soon as any new information becomes available.
Apologies for the continued inconvenience.
- Craig