回复：请问小白兔和mytwocents

下面是我今天早上的一个回贴.

1. 只有当你目前的EB3 140 批准后,PD 才保留. 只要这个140 没有被撤消, 你就可以永远用它的PD.
2. 但你以后用它的PD到其它的140时, 你必须有与新的140相对应的基础. 如新的140是基于LC的,必须有EB2 的LC. 然而如果新的140是基于 NIW, EB1, 或SCHECULE A的, 就可以直接FILE 而不必有LC了.
3.这是基于一个有好几十年历史的 REGULATION. 8 C.F.R. 204.5(e).

If you have an established PD based on your previous 140. You can use it in your EB1 filing, stating you want to use the PD of the previous 140 on your cover letter. And if the borrowed PD of your EB1 is current, you can file concurent 140/485. Lawyer has helped someone to file 485 using the rule to avoid a status crisis and CIS did accept the filing (did not return) under the fact that the cover letter reveals invoking the regulation. Consulting with a lawyer for the last part (485 filing part). A CIS policy may be slightly (indirectly) conflict with it. In the policy,both 140s need to approved to transfer underneach 485.