Hi there,
Your understanding is not quite right. Let me explain...
Users created on IM (or Admin Console) are not seen on UMP (Configuration->Accounts)
This is correct
Users created on IM (or Admin Console) shouldn't be able to login to UMP (only to Admin Console), unless a checkbox is selected on the "manage ACL" (IM) to "Make ACL Permissions available for Account/Contacts".
This is NOT correct. IM users will be able to login to UMP (in the same way as the Administrator user can)
Users created on IM could be linked to Accounts (defined on UMP), by using the "Set Account Link" button
This is not correct. IM users cannot be linked to accounts, but they can share ACL's used by accounts (for testing). The Set Account Link is for the LDAP integration.....
The Account Link field associates an LDAP group with a specific account. If the Account Link field is left blank, members of the LDAP group can view data according to their permissions for all accounts. If an account is specified in the Account Link field, LDAP group members will only have permissions to view data for their specific account.
If you have configured the LDAP configuration, maybe your LDAP users are of the format "user@emailaddress.com" and you may have changed the accepted format. In which case your IM users will need to be the same format to login to UMP ie with an "@" sign in the username.
hope this helps
cheers
Rowan