Change of Employer

[E-3 Sufferer]

Hi,

I have 5 paystubs from Employer A on E-3 visa but Employer B filled I-129 and my visa transfer was approved on I-797 with new I-94 on E-3 visa.How can I work back for Employer A?

Now Employer C want to apply for E-3 visa transfer on form I-129.Can I provide Employer C with Employer A paystubs?Or its better to wait for paystubs from Employer B?

Thanks,