This is far from a trivial task. It means manually creating a new JIRA project which in itself is trivial, but to move issues from AMBER to OLTU will mean you have to manually, by hand, re-create all the components, versions, labels, user permissions, workflows etc
Only once this is done can you move issues from Amber to Oltu.
Please note, that with the current version of JIRA
is not guaranteed to be
-- If this is an issue for you the only way to manage that is to move each issue one at a time.
If we setup the JIRA project for you, can you set about creating all the things above?