We are evaluating migrating from Clubhouse.io to JIRA. Migrating Clubhouse.io stories via CSV to JIRA seems to go quite smooth.
However, the description field formatting does not import correctly. The Clubhouse exported CSV formats the description field as markdown. This is not correctly imported in JIRA:

(left shows the broken JIRA description after import, right shows original Clubhouse description)
How can I fix this in automated fashion? I'd like to avoid having to manually fix the description of 100s of issues.