When someone enters a single 0.0 instead of a blank for missing score, TSCORE does warn you but allows you to do it. Which results in an incorrect score as the 0 is removed rather than being averaged.
I can’t think of a valid reason why, if a zero is scored, that it wouldn’t be by all judges. Therefore it would make more sense to force this to be a blank – and prompt the recorder to tell them that’s what is being done.