I exported messages from server (a period of 15 days) in all format (plt, txt, klm, wln and wlb), in the past.
Today, I try to import messages from file (wlb compressed file) to server.
Upload ended without error. (I see "10:31:37: Processing file 'civic.wlb.zip': 58383 messages found." in the log sub-frame)
When I try to search the messages filtering on that period, I obtain this message: "No data for selected interval".