1.What data is missing ...is it specific report (like Qos) or say from a date (say you are not seeing data for last 20 days)
I think the issue was resolved previously becoz you purged art datbase manually (it takes 1-3 days to recover data from CDR to ART depending upon database size ...hence the delay)
So you would need to repeat the same process and then confiure automatic purge
chk link
http://www.cisco.com/en/US/customer/products/sw/voicesw/ps556/products_user_guide_chapter09186a00800c26df.html#wp1100536
Before that here is small checklist which you can follow to make sure setting are correct
Check the following.
CDR Schedular service should be started and running
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System -> Enterprise parameter
Under the CDR Parameters section Verified these three parameter
CDR Format* = CDRs will be inserted into database.
CDR UNC Path = "\\\CDR>"
Local CDR Path* = C:\Program Files\Cisco\CallDetail
CDR Format* = CDRs will be inserted into database
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Service -> Service Parameter
Selected the publisher and then subscriber.
Verify these service parameter in Both the publisher and subscriber.
under "system" section
CDR Enabled Flag* = "True"
CDR Log Calls with Zero Duration Flag* ="True"
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CDR Insert service should only be started Only on Publisher
On subscriber it should be Stopped
Application->sevicability ->tools ->service activation select the publisher.
Cisco CDR Insert activated in publisher.
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More links
http://www.cisco.com/en/US/products/sw/voicesw/ps556/products_tech_note09186
a0080100566.shtml
CDR Analysis and Reporting
http://www.cisco.com/en/US/customer/products/sw/voicesw/ps556/products_administration_guide_chapter09186a00803f5268.html
