Hi D&C Holdings,
It sounds like you have already figured out how this needs to be done through Auctiva as the only way to accomplish this at present is to schedule each instance you would like the listing to post individually. Our auto-relist profile functionality does not offer the means to make an item relist automatically before it has ended.
We have creating an efficient way to schedule the same listing to post on multiple different occasions on our list of things to consider when planning future site updates, so this may be something you see added to the Auctiva site in the future.
If you have any other questions regarding your Auctiva account, please feel free to contact our customer support team using the form on the following page of our site:
http://www.auctiva.com/help/requesthelp.aspx-Mike