EB3的140批了后，申请h1不的三年延期之后，如果换工作，这个三年的h1b是否还有效？因为h1b的六年已经用完了。应该怎样来保持合法身份呢？
-As long as the I-140 sponsor (your current employer) does not withdraw the approved I-140, you can use it to extend your H1 for another 3 years beyond the 6 year limit when you do the H1 transfer.
