10 year old Approved I-140. No longer in US. Exempt from H1B cap?

[avatforman]

I have an approved I-140 from and old employer l, which was never cancelled. This was from around 10 years ago.

I left US right after this approval.

I was informed that as I have an approved I-140 I am exempt from H1B visa cap. Is this correct? I can't find any direct official documentation on this. Does anyone know where I can find such a document.