A Mantis Project A was imported. All Custom fields from Mantis were created automatically in JIRA.
When I import the Mantis Project B, which has nearly the same custom fields as project A, the import wizzard (step3/7) lists all fields once again, and the fields are created once again in JIRA. So after the import I have two fields with the same name (for all the custom fields) in JIRA. How can I avoid this? Can I influence the mapping of the fields?
One more hint:
I'm not sure that the fields imported via project A haven't been edited (e.g. added a description, the name is unchanged). Could this be the problem for the defective mapping?