Hi,
During the VirtueMart import, if you use the "VM2" import, there is a dropdown which ask for the language for the import.
VirtueMart store the product details into several tables and one of these tables is depending on a language code.
So if you do not import with the right language, the import will just have access to one part of the product details ; but without the other part, the import do not have enough data to create the product in HikaShop.
About VirtueMart 3 ; we know that the import is not perfect because the VM structure is changing a lot.
Our import has been designed for VM1 ; then we made a new import for VM2 and that last one could be compatible with VM3 ; but we had some bug feedback and we introduced some patches in the last versions of HikaShop.
That's why we don't officially support VM3 for the import but it should work (and it did work).
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.