不知道，但是帮你顶一下

不晓得诶，帮你顶一下。在未名上看了看，所有签经关于换签证的都是f2-->f1。不如mm去那里一同问问。

Not quite sure.  My feeling is that you will still have a valid F1 even if your application for H1B or F1 is denied.  After all, you F1 status comes from your spouse. The denial of the new application does not automatically invalid the old application for F2.  I think that the two applications are separate and based on different grounds.  Anyway, it is just my personal opinion.  Make sure to talk to a lawyer to get the right answer.