Box Jockey.
Im not sure if you mean importing the roster into log ten or your previous flying from the company.
If it's the latter, go to logbook go back as far as possible I think it's 2006 download your logbook. contact corradine and send the zipped file to them they will be able to convert the file and return it to you in a format that log ten can read.
Simply right click the returned file chose open with " log Ten " and your log book is correctly displayed
Hope this helps
If its importing monthly rosters its different if you have the desktop vs ipad version. Suggest going to corradine's site they have a good FAQ section