Resolved date is not being cleared when updating resolution via CSV import

Issue Summary

The resolved date field is not being cleared when updating the resolution via a CSV import.

Steps to Reproduce

1. Go to Settings > System > External System Import and upload a CSV example like below

   • key,summary,resolution
     EXAMPLE-100,Test,<<!clear!>>

2. Proceed with selecting your project and map each column to their respective field
   • Key -> Issue Key
   • Summary -> Summary
   • Resolution -> Resolution (map as is)
3. Proceed with the import
4. The resolution field will be cleared

Expected Results

• The resolved date field is also updated to reflect that the resolution field was cleared

Actual Results

• The resolved date field is not updated

Workaround

Currently there is no known workaround for this behavior. A workaround will be added here when available