是的,需要180天以后才能保留。以下是法律原文:
Retention of employment-based immigrant visa petitions. To enhance job
portability for certain workers with approved Form I–140 petitions in the
EB–1, second preference (EB–2), and third preference (EB–3) categories,
but who are unable to obtain LPR status due to immigrant visa backlogs, the
final rule provides that Form I–140 petitions that have been approved for
180 days or more would no longer be subject to automatic revocation based
solely on withdrawal by the petitioner or the termination of the petitioner
’s business. See final 8 CFR 205.1(a)(3)(iii)(C) and (D).