Hi,
That means that you have an error in your CSV file.
I suppose that in the price_access column of your CSV, you've entered something like this:
xxx,yyy,zzz
where xxx yyy and zzz are the ids of user groups. But that's not correct. Instead you should have:
,xxx,yyy,zzz,
The commas at the beginning and the end allows for MySQL queries optimizations which aren't possible without the commas there.
When you go through the interface, HikaShop adds them properly. But if you go through the import, the import process imports what you're giving it and doesn't check these commas.
Going through the interface and saving the access levels once allow for HikaShop to fix the commas which is why it then works.
So I'll recommend you review your CSV file.