Dave, thank you for your response

I accept the -Y displacements. this can be ignored

But the Hot sustained cases sometimes fails due to the frictional effects and the difference "no weight movement" and "weighted movements" . There are big horizontal displacements for the hot sustained cases - along with corresponding forces in horizontal plane which results in increased stresses.
The original aim is to account for gravity loads in operating condition, but we end up with different set of loads/stresses