When export CSV the field reporter is code just for some users

[Cristian Ionescu]

After CSV export the field reporter for some users not all of them is code: ef0b01ea-6e64-4aa0-abbb-0608dcd10717.

Why for some of the user the name is show and for some of them just code.

[Jack]

The reason for the obfuscation on the user names is associated with GDPR. Here is some useful reading:

• Say goodbye to usernames in Atlassian Cloud
• Atlassian's GDPR Commitment
  
  

I’m unsure why some are and some are not. I have not experienced this but have not done a lot of exporting of late either.

[Patricia Francezi -iDev-]

Im using Jira Sheets or Excel integrations to download the displayname (reporter.displayname) or reporter email  when needed

From search issues is not possible to download this data. 

https://integrations.atlassian.com/

you can edit the fields to export directly from the add-on configuration. 

I hope this helps you.