码农公司。2020初file过Perm & 140并且也approve了。六月初要从湾区内部转组到东
岸，所以需要重新file Perm & 140。和律师讨论后，需要一封Experience
Verification Letter. 我问是否可以用前一个组的experience时，她说
Time employed by [company name] in the United States can be used if the PERM
position and the [company name] U.S. position in which you gained the
relevant experience (Qualifying Position) are not substantially comparable.
This means that more than 50% of your time in the PERM position must be
spent performing new job duties that were not performed in the Qualifying
Position.
暗示我不能用同公司前一个组的experience做EVL (都是sde)。这一点我不理解：为什
么之前的职位(Qualifying Position)要和现在的职位(PERM position) 不comparable
呢？难道不是应该comparable以显示经历relevant & consistent? 况且我这需要re-
file也是因为location change啊，而不是换职位（还是sde)。请问版上有人了解或遇
到类似的情况吗？
