I've just taken over a Drupal 7 site running Civi. I'm very Drupal literate but new to Civi. Since moving the site to a new host everything appears to work but users' groups and memberships don't appear to be showing in Drupal. I can browse a user in Civi and see they are an active member and belong to certain groups but in Drupal under the user account it says no active memberships/doesn't belong to any groups. This is only since moving the site. As I'm new to Civi I don't know where to start.
Can anyone advise where I should look for this?
Thanks,