我的綠卡排期已經current，未來新的雇主還可以利用以前approved I－140，繼續要求H1B transfer、拿到3年的延期？
-Yes. You don't have an active/valid approved I-140 to file I-485 at this point, so technically you don't have the valid priority date yet until you have a new I-140. So, you can use the old approved I-140 to extend your H-1 for another 3 years beyond the 6-year H-1 limit.
