Hi,
If the file already exists it's not a problem.
It just to inform you that you already have the file in your HikaShop folder so it does not copy it.
If it is possible that you have a different version in virtuemart, it alerts you that you might copy it manually (the import system can't know when a file is different which has to be kept or not, so we didn't put any test for it and we just warning the user).
Regards,
Jerome - Obsidev.com
HikaMarket & HikaSerial developer / HikaShop core dev team.
Also helping the HikaShop support team when having some time or couldn't sleep.
By the way, do not send me private message, use the "contact us" form instead.