Current Salary Lower than LC

Hi, the current salary my company pays me now is around $20,000 lower than what's on my LC, now I'm in I-140/I-485 concurrent filing preparatino stage and my employer's employment certificate letter to BICS states my current salary.

Also my lawyer told me that the LC salary is for future employment, but I still worry if this can cause any obstacle.

Anyone has similar experience and can share with me? thanks a lot.