Access LTC from LTC core using Trezor's Segwit private key

Folks,

So I derived my m/49 BIP49 using my 24 seed for my LTC from Trezor.

I imported the private key into the core wallet but it did not show any balance for my LTC !

can any one help?

Many things could have gone wrong here. How exactly did you derive the BIP49 addresses?