When moving an issue from one type to another you get an overview of which fields have been updated. For some fields the contents are just removed.
Is there a way to configure this, so the contents of those fields can be moved to a different field?
Not without an app that allows you configure the target field. I evaluated Exocet - copy, link and sync Jira issues a while back for a similar situation, but there are other apps on the marketplace that would allow you to do the same thing.
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