I try, however, to explain what was happening to me.
I change the translation of the two fields in simutranslator, then I export the file "it.tab" for SimuExp. The file "it.tab" did not update.
However, if I export the file "it.tab" for SimuSTD fields were correctly translated.
I do not know if, after my report, someone has fixed the problem, but this morning the problem is gone.