asset migration issue when migrating from 5.4 to 5.0

asset migration issue when migrating from 5.4 to 5.0, I try to migrate and it shows in file manager but does not in unreal engine.

Hey there @Gagan1403! Welcome to the community! Assets aren’t meant to be downgraded, so they can often cause issues trying to migrate them backwards. Usually it’s more recommended to export the assets out to a separate universal format and reimplement.