Moving from Membership free to Premium I can't list expiry dates in a table.

Hi!

I have been using Membership free for a while and I made an HTML table that read expiry dates of users from the SQL databese (membership_relationships table)based on userid. Since I upgraded to the premium version I noticed that new member's dates did not appear. I checked the SQL and these new people were not added there. My question basically is, where does these information get stored in the premium version?

Thank you in advance!