I am trying the beta Rating question, which is a nice new feature. However it does not allows to re-order the sub-questions. Therefore, I exported the survey into xls in order to review manually.
However, at the time of re-importing it, the online webform is corrupted (you can check the link). The same occures if the xls file is not modified at all (just exported and new form created from it).
I exported the new (corrupted) form again to xls to compare, and it seems that it is the same than the previous exported survey.
I will be pleased to provide more details or more tests if needed.