NO. Your LC belongs to your old company. So, if the new one need you, why not do it again asap?
2.如果一年後公司解散,我是否能夠繼續掛在老板的名下直到485排期等到並於180天後換工作?
If you get pay, it will be ok. If not, how can you prove that you can be supported without being burden of America