Duplication in backup folder path

I created this new plugin to backup my configuration for AMPSS but noticed a duplicate "data" folder is generated in the backup folder for `File3`.

```
[Info]
Title=AMPPS
Description=Backup of databases, domains and local sites from AMPPS Software Stack.
Author=Warren Galyen
AuthorURL=http://www.github.com/warrengalyen

[Files]
File1=BackupFolder64|%ProgramW6432%\Ampps\www
File2=BackupFolder64|%ProgramW6432%\Ampps\mysql\data
File3=BackupFolder64|%ProgramW6432%\Ampps\ampps\data
File4=BackupFolder64|%ProgramW6432%\Ampps\private
File5=BackupFile64|%ProgramW6432%\Ampps\ampps\data\my.conf
File6=BackupFile64|%ProgramW6432%\Ampps\apache\conf\extra\httpd-vhosts.conf
```

Backup Folder Structure:

Actual Folder Structure:

Start by reproducing the backup with the AMPPS configuration shown in the issue, especially File3, and compare the generated backup structure with the actual folders. Trace the backup-folder handling for that entry and confirm that the completed backup contains no duplicate data directory.

Written by the indexing model from the issue text.