Updating a Converted Lead Record

When an Account associated with a converted Lead is merged, Salesforce updates the ConvertedAccountId and SystemModStamp fields on that Lead. This can cause the Lead to appear multiple times in queries ordered by SystemModStamp.

Notes: 

• This can result in unexpected results when querying converted Leads, and may display duplicates such as the original and then the post-conversion Account, when querying based on the 'SystemModStamp.'
• This should be taken into consideration when maintaining a history of converted Leads and issuing queries to Leads based on the 'SystemModStamp,' as a Lead can appear multiple times - once for each Account it is associated with. 

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