Issue Summary

Jira allows users to specify the delimiter of the CSV file during the CSV import. However, when using a CSV import configuration file which has a delimiter other than comma ','; Jira fails to recognize it. 

Steps to Reproduce

1. Create a CSV Import Configuration file or amend an existing one to have a delimiter other than comma
2. Go to Administration > System > External System Import and select CSV
3. Select a CSV file and the configuration file above for the import
4. Begin the import

Expected Results

Jira will recognize the delimiter specified in the configuration file (i.e. under config.delimiter field in the configuration JSON file)  

Actual Results

Jira does not recognize the delimiter from the file. It always gives precedence to the comma ',' delimiter specified by default in the UI.

Workaround

Always specify the delimiter at the UI.