[BUG] Export to ckl format leads to duplication of fields

[georgedias]

Describe the bug
Exporting a scan to DISA Checklist (ckl) format leads to the following anomalies:

• If the Version field is modified, the new value gets appended to the title even if the field was previously present on the title.
• If the Release field is modified, the new value gets appended to the title even if the field was previously present on the title.
• If the Name (title) field is modified, the updated content is not saved of exported - there is, the previous value (name) is exported.

To Reproduce
Steps to reproduce the behavior:

1. Load a scan
2. Click on Export
3. Select Export as DISA Checklist
4. Make changes as listed above
5. Export the scan as a checklist
6. Open the exported checklist in the STIG Viewer
7. Noticed the duplicate fields or unmodified name (title)

Expected behavior
The modification made in the export window to be saved and exported to the checklist