Export modified filter to Excel revert the column order configured for the filter

When Exporting a customized columns filter using Excel (Current Fields), the exported Excel file revert the columns to the default configuration.

Steps to produce:

1. Create a filter in advanced mode using JQL, for example the following JQL:

   project = "Demonstration Project" AND resolution is EMPTY
   

2. Save the filter
3. Change the filter column order to show a field such as Labels field
4. Export the filter to Excel, the filter will be correctly exported.
5. Now,add another JQL clause to the previous JQL query for instance:

   AND labels = abc
   

6. Export the filter to Excel (without saving the changes to the filter). You will notice the columns will revert to the default configuration (without the Labels column)

Workaround:

Save the modified filter before exporting to Excel
Detailed at: https://confluence.atlassian.com/display/JIRAKB/Column+order+when+exporting+a+filter+search