Hi, 
I'd like to import customer reviews from my old shop into the new shop. I didn't import the old customer accounts, so I can't map the reviews to existing customer IDs. 
What would be the best way to import the customer reviews?  
Can I assign each review to a new unique customer ID without any associated information such as email address, physical address, etc., but with their name/initials?  
If so, how do I do this without messing up the customer ID table that already exists in the new shop?  
And how can I mark the new unique customer IDs as guest accounts? 
Thanks!