try importing a different account and see if it works. The cm_amore account is probably already in the db.
 
You can try searching for the old account under User Management with the following checkboxes checked.

 One last question on this topic.  Rather than having to manually use the fast member search and have to keep up with that process as new users come and go.  Could our DBA automate the process by simply pulling usernames and email addresses (from another database we have) and putting them into the Login and Email Columns under the dob.pgd_Members table? Would any other column need to be populated?

This seems to be a bit of a clue:
Config Error The configuration section 'membership' cannot be read because it is missing a section declaration

http://www.aspplayground....tegration-m405616.aspx
See the configuration we have on this page. You need to put in attributeMapUsername="SAMAccountName"