Problem

When using the CSV importer to import 21+ comments in a single ticket, it will not properly import all comments. Instead, only 20 comments are added and then repeat again. Comments above 20 are not added. This behaviour only occurs when:

• Created field is also populated with the CSV
• And no timestamps are provided for comments

Steps to Reproduce

• Create a CSV file with over 20 comments or use this file: multiple_comment_import.csv
  • In this file, there are 25 comments, numbered 1 to 25
• In JIRA navigate to: JIRA Admin > System > External System Import > CSV
• Go through the import wizard:
  • Select an existing project
  • Ensure to map Comments, Created Date, Summary
• Once import is complete check the new tickets

Expected Behaviour

All comments are properly imported from 1 to 25.

Actual Behaviour

Only 20 of the 25 comments are imported and then 5 of those comments are repeated again. The comments seem to be random:

• In this case, notice that comments 1 to 5 are missing and 21 to 25 are duplicated.

Notes

Just wanted to re-iterate that this only occurs when these conditions are met:

• Created field is also populated with the CSV
• And no timestamps are provided for comments