I read some posts saying that

來源: 於 2005-10-31 21:28:56 [舊帖] [給我悄悄話] 本文已被閱讀：次

You can transfer your pending 485 to a new I-140 only if the old I140
is approved. if this is true,then maybe it's better to fild EB1-B instead of NIW.