In-Place Conversion Method > Running the Conversion > Delete Prior System Data
  
Delete Prior System Data
The next step removes obsolete system data from tables such as the field help master (flh_mstr) and message master (msg_mstr).
1 You are prompted to connect to your conversion database as target.

Connect to Target Database
2 The Log Window displays as obsolete system data is deleted.

Delete Prior System Data Log
3 On completion, choose Close to continue.