journey (and avoid being charged extra on pre-pay), had they
If you have a season ticket it doesn't matter (at the moment). You
only get an unresolved journey if you start your journey outside the
boundary of any travelcard you have and don't end it. Or vice-versa

Ahh ok so on my Z1-2 card if I get in Z3 and don't end it then it gets
confused? The other direction could be common though if you change to NR at
Finsbury Park and don't pad out then it won't know where you got out. That
was the scenario I assumed it would charge you a full journey to Z6 as a
fine for not padding out.

Someone at work has a Z1-4 season and travels in from Oakleigh Park,
changing at Finsbury Park/Highbury, and rarely touched in there or out on
her journey home. She said she never had a problem with it, so maybe it
doesn't fine you.

Regards,
Dave