485 filing time

why some people file 140 and 485 together, and get AP and EAD even before the approval of 140. I was told that I have to wait for the visa number available, then file 485?
which is right?

thanks

所有跟帖： 

• 因为排期每个月都在变化 -toosad- ♀ (189 bytes) () 01/14/2008 postreply 19:16:14

• 回复：因为排期每个月都在变化 -live2007- ♂ (238 bytes) () 01/14/2008 postreply 19:32:35

• 除非您是EB1, 否则都有等排期的问题 -toosad- ♀ (350 bytes) () 01/14/2008 postreply 19:46:41

• 回复：除非您是EB1, 否则都有等排期的问题 -live2007- ♂ (220 bytes) () 01/14/2008 postreply 19:55:58

• 不对 -toosad- ♀ (707 bytes) () 01/15/2008 postreply 00:19:19

• 回复：不对 -live2007- ♂ (75 bytes) () 01/15/2008 postreply 01:19:52