Since the original i-485 was employee based, the company attorney has all the documents. The i-130 was already approved.
What documents we need to provide to link with the original i-485?
-It is irrelevant to your company, but you need to ask the lawyer to give you the copies of I-140 approval notice and the I-485 receipt and then, provide these two and your I-130 approval notice for the I-485 interfiling.
Hre is an example of I-485 interfiling between two I-140s, but the principle/method can be used for I-485 interfiling from I-140 top I-130: