...Read this before upgrade from previous v1.1.17.0003 and below
Upgrading from previous versions prior to v1.1.17.0003 and below
If you have been using Debtors List Saver version older than v1.1.19.1219, please do the following.
1. Open the folder on your machine, where you have installed Debtors List Saver (for example, C:\Program Files\Debtors List Saver)
2. Copy the userdata.dat and settingdata.dat files
3. Hit on the keyboard the Windows Key+R to open the Run window, Type %AppData% in the Open text field then click OK
4. ...