Simple Folder and File Naming Rules That Keep Data Migrations Under Control

Data migrations generate hundreds of files, and poor organisation can lead to confusion, wasted time, and lost confidence in project data. A structured approach using numbered folders—from raw extracts to client handover—ensures files sort in the order work happens, giving an instant project status overview. Dating file names in year-month-day format and never overwriting raw extracts or load files preserves a reliable audit trail when numbers are later questioned. Keeping every rejected-rows file and logging loader quirks with dates and timings turns recurring technical problems into documented business findings. Maintaining a signed-off mapping file and a brief decision log with dates and names helps resolve disputes quickly without assigning blame.