Auto Fill: Some field entries from previous submissions remain in subsequent submissions from the same person

Another thing I've noticed is we've added a conditional question that's only made visible when the total number in one box goes over a certain amount. If you answer this conditional question some browsers remember the answer the next time you fill in the form which may not be relevant (condition isn't satisfied). Is there a way to force browsers to not save the answer to this conditional question?

The reason that previous field entries remain in the subsequent submissions your users are making, is because Auto Fill is enabled in your form's Preferences:

https://www.jotform.com/help/227-How-to-Enable-Auto-Fill-Feature

If you did not want to have data that your users are entering saved in their browsers, please disable the Auto Fill / Continue Forms Later option:

Thank you.