This question is in reference to Atlassian Documentation: Importing data from Mantis
The option associated with the Mantis Import Wizard is not avaiable.
Well this is the answer : https://answers.atlassian.com/questions/226710
It doesn't work for JIRA on Demand, only for stand-alone JIRA instances
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.
You must be a registered user to add a comment. If you've already registered, sign in. Otherwise, register and sign in.