Dear Duncan,
Thanks for your opinion. My reply:
1) No! Shoes did not move in unexpected way. Actually the movement of the supports is same as what I am getting in CAESAR II analysis (at those nodes). And that is why my conclusion is that this movement should not be of ANY concern.

2) Yes, right extending the shoes is never a problem as I have also suggested on a modification done recently and there IT WAS NEEDED. Main thing here is that though it is not needed, but it will add to the peace of mind of operating team.

3) Hmmm! No criterion! Ok, it would have made my life easier (up to XXX mm, do not do anything, above XXX mm, do that.) I have to figure out something else now. Line anyhow is safe with this much movement (maximum 100 mm) and is NOT hitting anything else.

4) Thanks for your reply and suggestions again. Appreciated!