I have imported my old Help Desk records in full. All seemed fine until I checked the Created dates on individual issues in the project, which have all been set to dates in January 2021 somehow.
I don't want to delete the whole lot and start importing again, so is there any way that I can easily update the created date in bulk for all the imported issue records, without causing any major damage?
Please note, I'm a newcomer to this, so be gentle! 
Thanks in advance