When you say you "took them offline" you didn't manually change the settings?? You updated the auction lots and AW2000 changed the Status for you??
Don't worry about the Start and Close dates. When you list the Auction lot again, AW2000 will change the dates to the correct Start and Close date. You do not have to do anything to those fields. It is automatic. When you Start the auction is determined by when you Queue the Lot for Listing and then actually submit the Lot.
Hope that helps
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