Matching contacts during Event Registration

[sratay]

I am using Civi 1.7 and trying to set up event registration for the first time.  We are noticing that when entering the same email address, duplicate contacts are being created in Civi.  From reading some other postings, I realize that the handling of duplicate participants is not in Civi 1.7, but I would not expect duplicate contacts to be created in Civi 1.7.  I have set up the duplicate matching rules to only match on email address.

It appears that the cause of this issue is the fact that the parameters being used for email address on the event registration are "email-6" and "email-Primary".  Once these parameters make their way into CRM_Core_BAO_UFGroup::getWhereClause(), they are eventually removed since the only configured matching field is simply "email".

Also, I know that the duplicate matching is kind of working, because if I try to edit and save one of these newly created contacts, I get all kinds of warning messages about there being several other duplicate contacts in the database.

Have others successfully implemented event registration in 1.7?  Any other suggestions?

Thanks, Steve

[Michał Mach]

Are there any specific reasons why you cannot upgrade to 1.9, which is current stable and maintained release?

Thx,
m

[Dave Greenberg]

There appears to be a bug in the matching process when the matching rule is set to Email Address only. The bug is still present in 2.0 beta. I've filed an issue for a fix: http://issues.civicrm.org/jira/browse/CRM-2690 - you can track progress there.