Problem querying list of users,devices,last connection time

Prior to our upgrade to Mobility version 1.2.5.4417 we followed this TID: Support | How to get a list of users, devices and the last connection time for the devices in order to find out which users were added to Mobility, but had not connected a device in 30 days. This command (psql -U datasync_user mobility -c "select userid,deviceid,identifierstring,tstamp from devices" -H > /tmp/output.html) used to generate a list with the users ldap user id before we upgraded. Since 1.2.5.4417, we now receive a numeric/has user identifier instead of the ldap user id.

Does anyone know if the field containing that information has changed and we need to reference a different field in the database?

Thank you for any help you can provide.
Tom