Most of my columns in excel beaked because i have commas (,) inside my submittions. ODK also uses comma as a column delimiter. Is there any method change delimiter when exporting into xml?
Are you referring to CSV files obtained with Aggregate or Briefcase?
In any case, values containing commas should be wrapped between double quotes, which wouldn't interfere with the column separator commas. If they're not doing that, it's a bug we should fix.