你好,我仔细阅读了移民局官网,得到如下结论:
关于父母移民你需要符合:
A person is considered settled if they are an Australian citizen, Australian permanent resident or an eligible New Zealand citizen who is lawfully resident in Australia for a reasonable period. In normal circumstances, two years is considered to be a reasonable period. For Australian citizens this period may be reduced to at least three months.
没有提到派遣出去工作可以豁免。
Limitations on applications
If you are in Australia, you may be prevented from applying for this visa if, for example:
you do not hold a substantive visa (which is any visa other than a bridging visa, a criminal justice visa or an enforcement visa) and had a visa cancelled or refused since you last arrived in Australia
your last visa was granted on the condition that you would not be granted a substantive visa while you remain in Australia
you hold a sponsored visitor visa
you are in immigration detention.
If any of the above circumstances apply, contact your nearest departmental office before making an application.