All data in our installed Jira have procject keys (i.e. "OPS-", "IT-", "ADMIN-") that do not exist in our Jira OnDemand instance.
I want to import Jira-issues from our own installation to the OnDemand instance, but need to know if ALL content in OnDemand will be overwritten.
As Jobin said, yes all content will be overwritten.
Just for the record, I believe that the best course of action here - seeing that you want to transfer all data from your local instance to OnDemand - would be to:
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