@InvisionHQ I got this error when I was trying to merge 2 members. Using latest IPS version.
UPDATE `bpi_classifieds_membersdata` classifieds_membersdata SET `member_id`=48921 WHERE member_id=44564
IPS\Db\Exception: Duplicate entry '48921' for key 'PRIMARY' (1062)
#0 /web/system/Db/Db.php(1150): IPS\_Db->preparedQuery('/*IPS\\classifie...', Array)
#1 /web/applications/classifieds/extensions/core/MemberSync/adverts.php(145): IPS\_Db->update('`bpi_classified...', '`member_id`=?', 'WHERE member_id...')
#2 /web/system/Member/Member.php(3767): IPS\classifieds\extensions\core\MemberSync\_adverts->onMerge(Object(IPS\Member), Object(IPS\Member))
#3 /web/system/Member/Member.php(3801): IPS\_Member->memberSync('onMerge', Array)
#4 /web/applications/core/modules/admin/members/members.php(2371): IPS\_Member->merge(Object(IPS\Member))
#5 /web/system/Dispatcher/Controller.php(85): IPS\core\modules\admin\members\_members->merge()
#6 /web/system/Dispatcher/Dispatcher.php(152): IPS\Dispatcher\_Controller->execute()
#7 /web/admin/index.php(14): IPS\_Dispatcher->run()
#8 {main}
Need a fix for that.