Question regarding LCA

[pradhan06]

I work on an EVC model (H1B), The primary vendor requested a change in the middle vendor, so my employer planned to do an amendment and filed a new LCA. Now the prime vendor wants me to continue with the old middle vendor. I believe the new LCA needs to be revoked by my employer. Will my old LCA still valid? As far as dates on my old LCA goes its still valid. I am just concerned and not aware of the status of the old LCA when a new one is filed. My employer says the old LCA is still valid but I want to get a second opinion to make sure I have a valid LCA when I go for a stamping. Please suggest the safest way to make sure all is well. Thank you!