This points out another advantage of using csv or adif files to upload logs. If you discover an error you just delete the activation, correct the error in the relevant file, csv or adif, then upload again. You never need to download, edit, upload.
Naturally this requires you to keep all the csv files, so they need to be uniquely named. My standard is to name them with the date in standard format included in the file name, ie, yyyymmdd.
This ensures that they automatically appear in date order on your computer. These files are included in the documents that are backed up by weekly incremental backups.
While most of my activator logs are now produced by vkportalog i have occasional activator logs created using FLE as well as chaser logs. Such files are named and stored in the same folder structure as others.