National Insurance Class 2 and 4

MTJR

So when calculating class 2 and class 4 national insurance on a sole traders taxable trading profits, this person has loss relief carried forward from the previous year. Does that loss come off the taxable trading profits before calculating Class 2 NIC? From what I understand, it’s deducted before calculating Class 4 NIC but HMRC website and from the bits of info I can find elsewhere, it’s not deducted for class 2?
I’ve confused myself!! Can anyone help

Thanks

Jagz1234

Yes - losses always CF for NIC if not used, no sideways relief

MTJR

Thank you!