I don't know your full use case but note that there are out-of-the-box Jira workflow post functions that can clear a field.
Thanks for reaching us. I'm from Automation for Jira team :)
It seems that you're trying to clean the custom field Baseline end date, right?
So, can you try to remove the additional field configuration?
Then, you'll need to keep this field empty, and with this configuration, your field will be empty.
Can you give a try and let me know how it goes?
Have a nice day!
I stumbled upon this issue, because I have the same use case:
Unfortunately, the solution you suggest does not work for me:
But the field is of course available for this issue; the issue got selected only because it has this field set.
Any ideas on how to solve this?
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