My BI colleague asked me to put if I can 2 new fields on account, both related with the lead that this account was before conversion. One is the Creation Date and the other is the ID of the lead.
I already managed to do this creating new fields on both lead and Account and customizing the Mapping on conversion from lead to account.
But this only modify obviously all the new leads that are being converted.
Is there a way to obtain this 2 attributes for all the already converted leads?