change job while I-140 not approved yet

I have a question for all 大俠, my I-140 is not approved yet, I-485 pending less than 180 days. If I change job now by transfering H1B to another employer, my current employer doesn't withdraw my I-140 and I-485, can my I-140 and I-485 still be approved? Or once I transfer my H1B, the USCIS will know that I'm changing employer and will no longer proceed with my 140 and 485?

Would really appreciate if someone can give some hint.
Thanks a lot!