Some base morphs like pastels, fires, cinnamons, are prone to having railroad tracks (het pied markers) and/or ringers or partial ringers. It just goes with the territory on some morphs.
This in itself can make it hard to say if they have markers even IF one of the parents was known to be a het or possible het pied.
Therefore, when these markets are seen in these morphs, and the genetics are unknown, or were not supposed to be het according to the breeder, then they can not be called het pied markers at all. Just a random and quite common pattern occurrence.