Issue Summary

Exporting objects using desired encoding always ends up with UTF-8 encoding instead.

Steps to Reproduce

1. Create an asset using characters from ISO-8859-15 charset:
   
2. Open object view > cog icon > Export objects
3. Select ISO-8859-15 encoding > Export
4. Open the file in a text editor and observe the results
5. Run "file" command to confirm the charset:

   file -ib export.csv

Expected Results

• Reviewing the hexadecimal representation of the file reveals properly encoded characters. For example, character 'ä' matches its hexadecimal representation 'e4' for encoding ISO-8859-15:
  
• file -bi export.csv Linux command shows the desired charset:

  $ file -I export.csv
  export.csv: text/plain; charset=iso-8859-1
  

Actual Results

• Reviewing the hexadecimal representation of the file reveals the same character is being encoded with UTF-8 'c3 a4':
  
• file -bi export.csv Linux command shows the utf-8 charset:

  $ file -I export.csv
  export.csv: text/plain; charset=uf-8
  

Workaround

Reopen or import the CSV file and select desired encoding in the used program / tool.

Notes

• This bug ticket originates from https://jira.mindville.com/browse/ICS-1888, which was only partially fixed.
• The behaviour is not present in Insight 8.6.7, but became present in the following versions.