Survey with branches, see attached screenshot.
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Do you own a car? -> Yes
next page
Did you buy it new or second-hand? -> I bought it new
next page
How did you pay for your new car?
do not answer, and click on Previous page
Did you buy it new or second-hand? -> I bought it new
this is OK
click on Previous page again
you are back at page 1
Do you own a car?
Change your answer from Yes to No
you arrive on page 3:
How did you pay for your new car?
Choose...
I paid cash
I got a bank loan
No answer
Do you sometimes use public transport to go to work?
This is wrong, Question "How did you pay for your new car?" should not be displayed here.
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I know this is terribly difficult to get right. It took me many hours of work in Questionnaire...
Joseph