I-140 approved. Switching Employers. Only have I-140 Receipt #

[SuryaGr8]

Hi,

My current employer does not provide the copy of my I-140 application approved on my behalf. Not even an electronic copy.

But I only have the I-140 receipt # that was approved on my behalf.

Is this enough to switch employers and port my current priority date?

Or do I need to get the I-140 application from USCIS directly using some method?